diff --git a/CHANGELOG.md b/CHANGELOG.md
index 618c3d8b5..68ea56f85 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,26 @@
+#### 3.1.7: Maintenance Release
+
+ - Add Japanese translation for v3.1.6 (#4603) @kazuhitoyokoi
+ - Update jsonata version (#4593) @hardillb
+
+#### 3.1.6: Maintenance Release
+
+Editor
+
+ - Do not flag env var in num typedInput as error (#4582) @knolleary
+ - Fix example flow name in import dialog (#4578) @kazuhitoyokoi
+ - Fix missing node icons in workspace (#4570) @knolleary
+
+Runtime
+
+ - Handle undefined env vars (#4581) @knolleary
+ - fix: Removed offending MD5 crypto hash and replaced with SHA1 and SHA256 … (#4568) @JaysonHurst
+ - chore: remove never use import code (#4580) @giscafer
+
+Nodes
+
+ - fix: template node zh-CN translation (#4575) @giscafer
+
 #### 3.1.5: Maintenance Release
 
 Runtime
diff --git a/packages/node_modules/@node-red/editor-api/lib/admin/settings.js b/packages/node_modules/@node-red/editor-api/lib/admin/settings.js
index d72f9e094..425d42415 100644
--- a/packages/node_modules/@node-red/editor-api/lib/admin/settings.js
+++ b/packages/node_modules/@node-red/editor-api/lib/admin/settings.js
@@ -13,7 +13,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  **/
-var apiUtils = require("../util");
 var runtimeAPI;
 var settings;
 var theme = require("../editor/theme");
diff --git a/packages/node_modules/@node-red/editor-api/lib/auth/strategies.js b/packages/node_modules/@node-red/editor-api/lib/auth/strategies.js
index e18925c19..b071a9caf 100644
--- a/packages/node_modules/@node-red/editor-api/lib/auth/strategies.js
+++ b/packages/node_modules/@node-red/editor-api/lib/auth/strategies.js
@@ -18,7 +18,6 @@ var BearerStrategy = require('passport-http-bearer').Strategy;
 var ClientPasswordStrategy = require('passport-oauth2-client-password').Strategy;
 
 var passport = require("passport");
-var crypto = require("crypto");
 var util = require("util");
 
 var Tokens = require("./tokens");
diff --git a/packages/node_modules/@node-red/editor-api/lib/editor/index.js b/packages/node_modules/@node-red/editor-api/lib/editor/index.js
index 648daa09b..54cf17f12 100644
--- a/packages/node_modules/@node-red/editor-api/lib/editor/index.js
+++ b/packages/node_modules/@node-red/editor-api/lib/editor/index.js
@@ -14,11 +14,9 @@
  * limitations under the License.
  **/
 
-var express = require("express");
 var path = require('path');
 
 var comms = require("./comms");
-var library = require("./library");
 var info = require("./settings");
 
 var auth = require("../auth");
diff --git a/packages/node_modules/@node-red/editor-api/lib/editor/library.js b/packages/node_modules/@node-red/editor-api/lib/editor/library.js
index cd564b3f8..7853227ea 100644
--- a/packages/node_modules/@node-red/editor-api/lib/editor/library.js
+++ b/packages/node_modules/@node-red/editor-api/lib/editor/library.js
@@ -15,8 +15,6 @@
  **/
 
 var apiUtils = require("../util");
-var fs = require('fs');
-var fspath = require('path');
 
 var runtimeAPI;
 
diff --git a/packages/node_modules/@node-red/editor-api/lib/editor/locales.js b/packages/node_modules/@node-red/editor-api/lib/editor/locales.js
index 568f5837b..6109d8741 100644
--- a/packages/node_modules/@node-red/editor-api/lib/editor/locales.js
+++ b/packages/node_modules/@node-red/editor-api/lib/editor/locales.js
@@ -13,9 +13,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  **/
-var fs = require('fs');
-var path = require('path');
-// var apiUtil = require('../util');
 
 var i18n = require("@node-red/util").i18n; // TODO: separate module
 
diff --git a/packages/node_modules/@node-red/editor-api/lib/editor/sshkeys.js b/packages/node_modules/@node-red/editor-api/lib/editor/sshkeys.js
index 08097571f..885967b91 100644
--- a/packages/node_modules/@node-red/editor-api/lib/editor/sshkeys.js
+++ b/packages/node_modules/@node-red/editor-api/lib/editor/sshkeys.js
@@ -15,7 +15,6 @@
  **/
 
 var apiUtils = require("../util");
-var express = require("express");
 var runtimeAPI;
 var settings;
 
diff --git a/packages/node_modules/@node-red/editor-api/lib/editor/theme.js b/packages/node_modules/@node-red/editor-api/lib/editor/theme.js
index e5c3904c7..c3808a751 100644
--- a/packages/node_modules/@node-red/editor-api/lib/editor/theme.js
+++ b/packages/node_modules/@node-red/editor-api/lib/editor/theme.js
@@ -14,7 +14,6 @@
  * limitations under the License.
  **/
 
-var express = require("express");
 var util = require("util");
 var path = require("path");
 var fs = require("fs");
diff --git a/packages/node_modules/@node-red/editor-api/lib/editor/ui.js b/packages/node_modules/@node-red/editor-api/lib/editor/ui.js
index e7bf15069..37c79d415 100644
--- a/packages/node_modules/@node-red/editor-api/lib/editor/ui.js
+++ b/packages/node_modules/@node-red/editor-api/lib/editor/ui.js
@@ -99,7 +99,7 @@ module.exports = {
             // settings.instanceId is set asynchronously to the editor-api
             // being initiaised. So we defer calculating the cacheBuster hash
             // until the first load of the editor
-            cacheBuster = crypto.createHash('md5').update(`${settings.version || 'version'}-${settings.instanceId || 'instanceId'}`).digest("hex").substring(0,12)    
+            cacheBuster = crypto.createHash('sha1').update(`${settings.version || 'version'}-${settings.instanceId || 'instanceId'}`).digest("hex").substring(0,12)    
         }
 
         let sessionMessages;
diff --git a/packages/node_modules/@node-red/editor-api/lib/index.js b/packages/node_modules/@node-red/editor-api/lib/index.js
index d9f34eafd..9264550b3 100644
--- a/packages/node_modules/@node-red/editor-api/lib/index.js
+++ b/packages/node_modules/@node-red/editor-api/lib/index.js
@@ -24,11 +24,8 @@
   * @namespace @node-red/editor-api
   */
 
-var express = require("express");
 var bodyParser = require("body-parser");
-var util = require('util');
 var passport = require('passport');
-var cors = require('cors');
 
 var auth = require("./auth");
 var apiUtil = require("./util");
diff --git a/packages/node_modules/@node-red/editor-client/locales/ja/editor.json b/packages/node_modules/@node-red/editor-client/locales/ja/editor.json
index 5d988c68a..53c8616fd 100644
--- a/packages/node_modules/@node-red/editor-client/locales/ja/editor.json
+++ b/packages/node_modules/@node-red/editor-client/locales/ja/editor.json
@@ -303,7 +303,8 @@
                 "missingType": "不正なフロー - __index__ 番目の要素に'type'プロパティがありません"
             },
             "conflictNotification1": "読み込もうとしているノードのいくつかは、既にワークスペース内に存在しています。",
-            "conflictNotification2": "読み込むノードを選択し、また既存のノードを置き換えるか、もしくはそれらのコピーを読み込むかも選択してください。"
+            "conflictNotification2": "読み込むノードを選択し、また既存のノードを置き換えるか、もしくはそれらのコピーを読み込むかも選択してください。",
+            "alreadyExists": "本ノードは既に存在"
         },
         "copyMessagePath": "パスをコピーしました",
         "copyMessageValue": "値をコピーしました",
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/utils.js b/packages/node_modules/@node-red/editor-client/src/js/ui/utils.js
index d0e2c4256..94bf19718 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/utils.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/utils.js
@@ -919,7 +919,10 @@ RED.utils = (function() {
      * @returns true if valid, String if invalid
      */
     function validateTypedProperty(propertyValue, propertyType, opt) {
-
+        if (propertyValue && /^\${[^}]+}$/.test(propertyValue)) {
+            // Allow ${ENV_VAR} value
+            return true
+        }
         let error
         if (propertyType === 'json') {
             try {
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/view.js b/packages/node_modules/@node-red/editor-client/src/js/ui/view.js
index 23385940c..b3ed6a6cc 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/view.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/view.js
@@ -4156,7 +4156,7 @@ RED.view = (function() {
                     }
                     var width = img.width * scaleFactor;
                     if (width > 20) {
-                        scalefactor *= 20/width;
+                        scaleFactor *= 20/width;
                         width = 20;
                     }
                     var height = img.height * scaleFactor;
diff --git a/packages/node_modules/@node-red/editor-client/src/js/validators.js b/packages/node_modules/@node-red/editor-client/src/js/validators.js
index 1673495aa..c17955ce1 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/validators.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/validators.js
@@ -16,8 +16,20 @@
 RED.validators = {
     number: function(blankAllowed,mopt){
         return function(v, opt) {
-            if ((blankAllowed&&(v===''||v===undefined)) || (v!=='' && !isNaN(v))) {
-                return true;
+            if (blankAllowed && (v === '' || v === undefined)) {
+                return true
+            }
+            if (v !== '') {
+                if (/^NaN$|^[+-]?[0-9]*\.?[0-9]*([eE][-+]?[0-9]+)?$|^[+-]?(0b|0B)[01]+$|^[+-]?(0o|0O)[0-7]+$|^[+-]?(0x|0X)[0-9a-fA-F]+$/.test(v)) {
+                    return true
+                }
+                if (/^\${[^}]+}$/.test(v)) {
+                    // Allow ${ENV_VAR} value
+                    return true
+                }
+            }
+            if (!isNaN(v)) {
+                return true
             }
             if (opt && opt.label) {
                 return RED._("validator.errors.invalid-num-prop", {
diff --git a/packages/node_modules/@node-red/nodes/core/common/20-inject.html b/packages/node_modules/@node-red/nodes/core/common/20-inject.html
index d50725d51..5895220d3 100644
--- a/packages/node_modules/@node-red/nodes/core/common/20-inject.html
+++ b/packages/node_modules/@node-red/nodes/core/common/20-inject.html
@@ -227,34 +227,42 @@
             name: {value:""},
             props:{value:[{p:"payload"},{p:"topic",vt:"str"}], validate:function(v, opt) {
                     if (!v || v.length === 0) { return true }
+                    const errors = []
                     for (var i=0;i<v.length;i++) {
+                        if (/^\${[^}]+}$/.test(v[i].v)) {
+                            // Allow ${ENV_VAR} value
+                            continue
+                        }
                         if (/msg|flow|global/.test(v[i].vt)) {
                             if (!RED.utils.validatePropertyExpression(v[i].v)) {
-                                return RED._("node-red:inject.errors.invalid-prop", { prop: 'msg.'+v[i].p, error: v[i].v });
+                                errors.push(RED._("node-red:inject.errors.invalid-prop", { prop: 'msg.'+v[i].p, error: v[i].v }))
                             }
                         } else if (v[i].vt === "jsonata") {
                             try{ jsonata(v[i].v); }
                             catch(e){
-                                return RED._("node-red:inject.errors.invalid-jsonata", { prop: 'msg.'+v[i].p, error: e.message });
+                                errors.push(RED._("node-red:inject.errors.invalid-jsonata", { prop: 'msg.'+v[i].p, error: e.message }))
                             }
                         } else if (v[i].vt === "json") {
                             try{ JSON.parse(v[i].v); }
                             catch(e){
-                                return RED._("node-red:inject.errors.invalid-json", { prop: 'msg.'+v[i].p, error: e.message });
+                                errors.push(RED._("node-red:inject.errors.invalid-json", { prop: 'msg.'+v[i].p, error: e.message }))
                             }
                         } else if (v[i].vt === "num"){
                             if (!/^[+-]?[0-9]*\.?[0-9]*([eE][-+]?[0-9]+)?$/.test(v[i].v)) {
-                                return RED._("node-red:inject.errors.invalid-prop", { prop: 'msg.'+v[i].p, error: v[i].v });
+                                errors.push(RED._("node-red:inject.errors.invalid-prop", { prop: 'msg.'+v[i].p, error: v[i].v }))
                             }
                         }
                     }
+                    if (errors.length > 0) {
+                        return errors
+                    }
                     return true;
                 }
             },
             repeat: {
                 value:"", validate: function(v, opt) {
                     if ((v === "") ||
-                        (RED.validators.number(v) &&
+                        (RED.validators.number()(v) &&
                          (v >= 0) && (v <= 2147483))) {
                         return true;
                     }
@@ -263,7 +271,7 @@
             },
             crontab: {value:""},
             once: {value:false},
-            onceDelay: {value:0.1},
+            onceDelay: {value:0.1, validate: RED.validators.number(true)},
             topic: {value:""},
             payload: {value:"", validate: RED.validators.typedInput("payloadType", false) },
             payloadType: {value:"date"},
diff --git a/packages/node_modules/@node-red/nodes/locales/zh-CN/function/80-template.html b/packages/node_modules/@node-red/nodes/locales/zh-CN/function/80-template.html
index 938a77818..31b43c764 100644
--- a/packages/node_modules/@node-red/nodes/locales/zh-CN/function/80-template.html
+++ b/packages/node_modules/@node-red/nodes/locales/zh-CN/function/80-template.html
@@ -23,7 +23,7 @@
         <dt class="optional">template <span class="property-type">string</span></dt>
         <dd>由<code>msg.payload</code>填充的模板。如果未在编辑面板中配置，则可以将设为msg的属性。</dd>
     </dl>
-    <h3>Outputs</h3>
+    <h3>输出</h3>
     <dl class="message-properties">
         <dt>msg <span class="property-type">object</span></dt>
         <dd>由来自传入msg的属性来填充已配置的模板后输出的带有属性的msg。</dd>
@@ -32,7 +32,7 @@
     <p>默认情况下使用<i><a href="http://mustache.github.io/mustache.5.html" target="_blank">mustache</a></i>格式。如有需要也可以切换其他格式。</p>
     <p>例如:
     <pre>Hello {{payload.name}}. Today is {{date}}</pre>
-    <p>receives a message containing:
+    <p>接收一条消息，其中包含:
     <pre>{
   date: "Monday",
   payload: {
diff --git a/packages/node_modules/@node-red/registry/lib/library.js b/packages/node_modules/@node-red/registry/lib/library.js
index 0b242b270..07cb54318 100644
--- a/packages/node_modules/@node-red/registry/lib/library.js
+++ b/packages/node_modules/@node-red/registry/lib/library.js
@@ -36,7 +36,7 @@ async function getFlowsFromPath(path) {
                     promises.push(getFlowsFromPath(fullPath));
                 } else if (/\.json$/.test(file)){
                     validFiles.push(file);
-                    promises.push(Promise.resolve(file.split(".")[0]))
+                    promises.push(Promise.resolve(file.replace(/\.json$/, '')))
                 }
             })
         }
diff --git a/packages/node_modules/@node-red/runtime/lib/flows/Flow.js b/packages/node_modules/@node-red/runtime/lib/flows/Flow.js
index b541a9d95..dd3d335a2 100644
--- a/packages/node_modules/@node-red/runtime/lib/flows/Flow.js
+++ b/packages/node_modules/@node-red/runtime/lib/flows/Flow.js
@@ -485,7 +485,7 @@ class Flow {
         }
         if (!key.startsWith("$parent.")) {
             if (this._env.hasOwnProperty(key)) {
-                return (Object.hasOwn(this._env[key], 'value') && this._env[key].__clone__) ? clone(this._env[key].value) : this._env[key]
+                return (this._env[key] && Object.hasOwn(this._env[key], 'value') && this._env[key].__clone__) ? clone(this._env[key].value) : this._env[key]
             }
         } else {
                 key = key.substring(8);
diff --git a/packages/node_modules/@node-red/runtime/lib/flows/Group.js b/packages/node_modules/@node-red/runtime/lib/flows/Group.js
index 521b6ceda..90d93cf45 100644
--- a/packages/node_modules/@node-red/runtime/lib/flows/Group.js
+++ b/packages/node_modules/@node-red/runtime/lib/flows/Group.js
@@ -41,7 +41,7 @@ class Group {
         }
         if (!key.startsWith("$parent.")) {
             if (this._env.hasOwnProperty(key)) {
-                return (Object.hasOwn(this._env[key], 'value') && this._env[key].__clone__) ? clone(this._env[key].value) : this._env[key]
+                return (this._env[key] && Object.hasOwn(this._env[key], 'value') && this._env[key].__clone__) ? clone(this._env[key].value) : this._env[key]
             }
         } else {
             key = key.substring(8);
diff --git a/packages/node_modules/@node-red/runtime/lib/flows/Subflow.js b/packages/node_modules/@node-red/runtime/lib/flows/Subflow.js
index 62948d203..c3a47e1f7 100644
--- a/packages/node_modules/@node-red/runtime/lib/flows/Subflow.js
+++ b/packages/node_modules/@node-red/runtime/lib/flows/Subflow.js
@@ -376,7 +376,7 @@ class Subflow extends Flow {
         }
         if (!key.startsWith("$parent.")) {
             if (this._env.hasOwnProperty(key)) {
-                return (Object.hasOwn(this._env[key], 'value') && this._env[key].__clone__) ? clone(this._env[key].value) : this._env[key]
+                return (this._env[key] && Object.hasOwn(this._env[key], 'value') && this._env[key].__clone__) ? clone(this._env[key].value) : this._env[key]
             }
         } else {
             key = key.substring(8);
diff --git a/packages/node_modules/@node-red/runtime/lib/storage/index.js b/packages/node_modules/@node-red/runtime/lib/storage/index.js
index f5e07e254..989989e1d 100644
--- a/packages/node_modules/@node-red/runtime/lib/storage/index.js
+++ b/packages/node_modules/@node-red/runtime/lib/storage/index.js
@@ -77,7 +77,7 @@ var storageModuleInterface = {
                         flows: flows,
                         credentials: creds
                     };
-                    result.rev = crypto.createHash('md5').update(JSON.stringify(result.flows)).digest("hex");
+                    result.rev = crypto.createHash('sha256').update(JSON.stringify(result.flows)).digest("hex");
                     return result;
                 })
             });
@@ -95,7 +95,7 @@ var storageModuleInterface = {
 
             return credentialSavePromise.then(function() {
                 return storageModule.saveFlows(flows, user).then(function() {
-                    return crypto.createHash('md5').update(JSON.stringify(config.flows)).digest("hex");
+                    return crypto.createHash('sha256').update(JSON.stringify(config.flows)).digest("hex");
                 })
             });
         },
diff --git a/test/unit/@node-red/registry/lib/library_spec.js b/test/unit/@node-red/registry/lib/library_spec.js
index 2e0e7e99a..75c444f67 100644
--- a/test/unit/@node-red/registry/lib/library_spec.js
+++ b/test/unit/@node-red/registry/lib/library_spec.js
@@ -33,16 +33,15 @@ describe("library api", function() {
         should.not.exist(library.getExampleFlowPath('foo','bar'));
     });
 
-    it('returns a valid example path', function(done) {
+    it('returns valid example paths', function(done) {
         library.init();
         library.addExamplesDir("test-module",path.resolve(__dirname+'/resources/examples')).then(function() {
             try {
                 var flows = library.getExampleFlows();
-                flows.should.deepEqual({"test-module":{"f":["one"]}});
+                flows.should.deepEqual({"test-module":{"f":["1.2.3","one"]}});
 
                 var examplePath = library.getExampleFlowPath('test-module','one');
-                examplePath.should.eql(path.resolve(__dirname+'/resources/examples/one.json'))
-
+                examplePath.should.eql(path.resolve(__dirname+'/resources/examples/one.json'));
 
                 library.removeExamplesDir('test-module');
 
@@ -57,6 +56,5 @@ describe("library api", function() {
                 done(err);
             }
         });
-
-    })
+    });
 });
diff --git a/test/unit/@node-red/registry/lib/resources/examples/1.2.3.json b/test/unit/@node-red/registry/lib/resources/examples/1.2.3.json
new file mode 100644
index 000000000..e69de29bb