diff --git a/README.md b/README.md
index 8c1b9c3..3bd8efa 100644
--- a/README.md
+++ b/README.md
@@ -3,12 +3,27 @@
 For more detail, please visit:
 > [Vue.js JWT Authentication with Vuex and Vue Router](https://bezkoder.com/jwt-vue-vuex-authentication/)
 
+> [Using Typescript](https://bezkoder.com/vuex-typescript-jwt-auth/)
+
 Fullstack with Spring Boot Back-end:
 > [Spring Boot + Vue.js: Authentication with JWT & Spring Security Example](https://bezkoder.com/spring-boot-vue-js-authentication-jwt-spring-security/)
 
 Fullstack with Node.js Express Back-end:
 > [Node.js Express + Vue.js: JWT Authentication & Authorization example](https://bezkoder.com/node-express-vue-jwt-auth/)
 
+Fullstack CRUD:
+> [Vue.js + Node.js + Express + MySQL example](https://bezkoder.com/vue-js-node-js-express-mysql-crud-example/)
+
+> [Vue.js + Node.js + Express + PostgreSQL example](https://bezkoder.com/vue-node-express-postgresql/)
+
+> [Vue.js + Node.js + Express + MongoDB example](https://bezkoder.com/vue-node-express-mongodb-mevn-crud/)
+
+> [Vue.js + Spring Boot + MySQL/PostgreSQL example](https://bezkoder.com/spring-boot-vue-js-crud-example/)
+
+> [Vue.js + Spring Boot + MongoDB example](https://bezkoder.com/spring-boot-vue-mongodb/)
+
+> [Vue.js + Django example](https://bezkoder.com/django-vue-js-rest-framework/)
+
 ## Note:
 Open `src/services/auth-header.js` and modify `return` statement for appropriate back-end.
 
diff --git a/package-lock.json b/package-lock.json
index 81faefb..416804a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2000,12 +2000,18 @@
       "dev": true
     },
     "axios": {
-      "version": "0.19.0",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.0.tgz",
-      "integrity": "sha512-1uvKqKQta3KBxIz14F2v06AEHZ/dIoeKfbTRkK1E5oqjDnuEerLmYTgJB5AiQZHJcljpg1TuRzdjDR06qNk0DQ==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.21.1.tgz",
+      "integrity": "sha512-dKQiRHxGD9PPRIUNIWvZhPTPpl1rf/OxTYKsqKUDjBwYylTvV7SjSHJb9ratfyzM6wCdLCOYLzs73qpg5c4iGA==",
       "requires": {
-        "follow-redirects": "1.5.10",
-        "is-buffer": "^2.0.2"
+        "follow-redirects": "^1.10.0"
+      },
+      "dependencies": {
+        "follow-redirects": {
+          "version": "1.13.1",
+          "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.13.1.tgz",
+          "integrity": "sha512-SSG5xmZh1mkPGyKzjZP8zLjltIfpW32Y5QpdNJyjcfGxK3qo3NDDkZOZSFiGn1A6SclQxY9GzEwAHQ3dmYRWpg=="
+        }
       }
     },
     "babel-code-frame": {
@@ -2800,7 +2806,8 @@
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
       "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "coa": {
       "version": "2.0.2",
@@ -3576,6 +3583,7 @@
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
       "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
+      "dev": true,
       "requires": {
         "ms": "2.0.0"
       }
@@ -5091,6 +5099,7 @@
       "version": "1.5.10",
       "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.5.10.tgz",
       "integrity": "sha512-0V5l4Cizzvqt5D44aTXbFZz+FtyXV1vrDN6qrelxtfYQKW0KO0W2T/hkE8xvGa/540LkZlkaUjO4ailYTFtHVQ==",
+      "dev": true,
       "requires": {
         "debug": "=3.1.0"
       }
@@ -5198,7 +5207,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -5219,12 +5229,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -5239,17 +5251,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -5366,7 +5381,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -5378,6 +5394,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -5392,6 +5409,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -5399,12 +5417,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -5423,6 +5443,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -5503,7 +5524,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -5515,6 +5537,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -5600,7 +5623,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -5636,6 +5660,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -5655,6 +5680,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -5698,12 +5724,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -6515,11 +6543,6 @@
         "binary-extensions": "^1.0.0"
       }
     },
-    "is-buffer": {
-      "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-2.0.4.tgz",
-      "integrity": "sha512-Kq1rokWXOPXWuaMAqZiJW4XxsmD9zGx9q4aePabbn3qCRGedtH7Cm+zV8WETitMfu1wdh+Rvd6w5egwSngUX2A=="
-    },
     "is-callable": {
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.1.4.tgz",
@@ -7451,7 +7474,8 @@
     "ms": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
+      "dev": true
     },
     "multicast-dns": {
       "version": "6.2.3",
@@ -9391,7 +9415,8 @@
       "version": "4.0.8",
       "resolved": "https://registry.npmjs.org/rx-lite/-/rx-lite-4.0.8.tgz",
       "integrity": "sha1-Cx4Rr4vESDbwSmQH6S2kJGe3lEQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "rx-lite-aggregates": {
       "version": "4.0.8",
diff --git a/package.json b/package.json
index e9a75ad..faead98 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "@fortawesome/fontawesome-svg-core": "^1.2.25",
     "@fortawesome/free-solid-svg-icons": "^5.11.2",
     "@fortawesome/vue-fontawesome": "^0.1.7",
-    "axios": "^0.19.0",
+    "axios": "^0.21.1",
     "bootstrap": "^4.3.1",
     "core-js": "^2.6.5",
     "jquery": "^3.4.1",
diff --git a/src/views/BoardAdmin.vue b/src/views/BoardAdmin.vue
index 5934071..f067099 100644
--- a/src/views/BoardAdmin.vue
+++ b/src/views/BoardAdmin.vue
@@ -23,7 +23,7 @@ export default {
       },
       error => {
         this.content =
-          (error.response && error.response.data) ||
+          (error.response && error.response.data && error.response.data.message) ||
           error.message ||
           error.toString();
       }
diff --git a/src/views/BoardModerator.vue b/src/views/BoardModerator.vue
index a3a5962..8c58de2 100644
--- a/src/views/BoardModerator.vue
+++ b/src/views/BoardModerator.vue
@@ -23,7 +23,7 @@ export default {
       },
       error => {
         this.content =
-          (error.response && error.response.data) ||
+          (error.response && error.response.data && error.response.data.message) ||
           error.message ||
           error.toString();
       }
diff --git a/src/views/BoardUser.vue b/src/views/BoardUser.vue
index 14eb1d3..4eca0c8 100644
--- a/src/views/BoardUser.vue
+++ b/src/views/BoardUser.vue
@@ -23,7 +23,7 @@ export default {
       },
       error => {
         this.content =
-          (error.response && error.response.data) ||
+          (error.response && error.response.data && error.response.data.message) ||
           error.message ||
           error.toString();
       }
diff --git a/src/views/Home.vue b/src/views/Home.vue
index 4dfd071..da9b2f7 100644
--- a/src/views/Home.vue
+++ b/src/views/Home.vue
@@ -23,7 +23,7 @@ export default {
       },
       error => {
         this.content =
-          (error.response && error.response.data) ||
+          (error.response && error.response.data && error.response.data.message) ||
           error.message ||
           error.toString();
       }
diff --git a/src/views/Login.vue b/src/views/Login.vue
index c444f68..22b7450 100644
--- a/src/views/Login.vue
+++ b/src/views/Login.vue
@@ -90,7 +90,7 @@ export default {
             error => {
               this.loading = false;
               this.message =
-                (error.response && error.response.data) ||
+                (error.response && error.response.data && error.response.data.message) ||
                 error.message ||
                 error.toString();
             }
diff --git a/src/views/Register.vue b/src/views/Register.vue
index 5db527b..6cc9128 100644
--- a/src/views/Register.vue
+++ b/src/views/Register.vue
@@ -101,7 +101,7 @@ export default {
             },
             error => {
               this.message =
-                (error.response && error.response.data) ||
+                (error.response && error.response.data && error.response.data.message) ||
                 error.message ||
                 error.toString();
               this.successful = false;
diff --git a/vue.config.js b/vue.config.js
new file mode 100644
index 0000000..a053f60
--- /dev/null
+++ b/vue.config.js
@@ -0,0 +1,5 @@
+module.exports = {
+  devServer: {
+    port: 8081
+  }
+}
\ No newline at end of file