diff --git a/packages/Webkul/Admin/src/Resources/views/catalog/products/edit.blade.php b/packages/Webkul/Admin/src/Resources/views/catalog/products/edit.blade.php
index ef383eba2..7e83c7f91 100644
--- a/packages/Webkul/Admin/src/Resources/views/catalog/products/edit.blade.php
+++ b/packages/Webkul/Admin/src/Resources/views/catalog/products/edit.blade.php
@@ -92,7 +92,7 @@
                                                     {{ $attribute->admin_name }}
 
                                                     @if ($attribute->type == 'price')
-                                                        <span class="currency-code">({{ currency()->symbol(core()->getBaseCurrencyCode()) }})</span>
+                                                        <span class="currency-code">({{ core()->currencySymbol(core()->getBaseCurrencyCode()) }})</span>
                                                     @endif
 
                                                     <?php
diff --git a/packages/Webkul/Category/src/Http/Controllers/CategoryController.php b/packages/Webkul/Category/src/Http/Controllers/CategoryController.php
index 27186ab17..5ccd1f572 100644
--- a/packages/Webkul/Category/src/Http/Controllers/CategoryController.php
+++ b/packages/Webkul/Category/src/Http/Controllers/CategoryController.php
@@ -74,7 +74,8 @@ class CategoryController extends Controller
     {
         $this->validate(request(), [
             'slug' => ['required', 'unique:category_translations,slug', new \Webkul\Core\Contracts\Validations\Slug],
-            'name' => 'required'
+            'name' => 'required',
+            'image.*' => 'mimes:jpeg,jpg,bmp,png'
         ]);
 
         $this->category->create(request()->all());
@@ -116,6 +117,7 @@ class CategoryController extends Controller
                 }
             }],
             $locale . '.name' => 'required',
+            'image.*' => 'mimes:jpeg,jpg,bmp,png'
         ]);
 
         $this->category->update(request()->all(), $id);
diff --git a/packages/Webkul/Core/src/Core.php b/packages/Webkul/Core/src/Core.php
index 0e694b17d..f385578fb 100644
--- a/packages/Webkul/Core/src/Core.php
+++ b/packages/Webkul/Core/src/Core.php
@@ -358,6 +358,21 @@ class Core
         return currency($this->convertPrice($amount), $currencyCode);
     }
 
+    /**
+    * Return currency symbol from currency code
+    *
+    * @param float $price
+    * @return string
+    */
+    public function currencySymbol($code)
+    {
+        try {
+            return currency()->symbol($code);
+        } catch (\Exception $e) {
+            return $code;
+        }
+    }
+
     /**
     * Format and convert price with currency symbol
     *
diff --git a/packages/Webkul/Core/src/Database/Migrations/2018_12_21_101307_alter_channels_table.php b/packages/Webkul/Core/src/Database/Migrations/2018_12_21_101307_alter_channels_table.php
new file mode 100644
index 000000000..cd0a009da
--- /dev/null
+++ b/packages/Webkul/Core/src/Database/Migrations/2018_12_21_101307_alter_channels_table.php
@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class AlterChannelsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('channels', function (Blueprint $table) {
+            $table->dropForeign('channels_default_locale_id_foreign');
+            $table->dropForeign('channels_base_currency_id_foreign');
+            $table->foreign('default_locale_id')->references('id')->on('locales');
+            $table->foreign('base_currency_id')->references('id')->on('currencies');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        //
+    }
+}
\ No newline at end of file
diff --git a/packages/Webkul/Core/src/Http/Controllers/ChannelController.php b/packages/Webkul/Core/src/Http/Controllers/ChannelController.php
index 6b4646a2b..73d31a776 100644
--- a/packages/Webkul/Core/src/Http/Controllers/ChannelController.php
+++ b/packages/Webkul/Core/src/Http/Controllers/ChannelController.php
@@ -77,7 +77,9 @@ class ChannelController extends Controller
             'locales' => 'required|array|min:1',
             'default_locale_id' => 'required',
             'currencies' => 'required|array|min:1',
-            'base_currency_id' => 'required'
+            'base_currency_id' => 'required',
+            'logo.*' => 'mimes:jpeg,jpg,bmp,png',
+            'favicon.*' => 'mimes:jpeg,jpg,bmp,png'
         ]);
 
         $this->channel->create(request()->all());
@@ -115,7 +117,9 @@ class ChannelController extends Controller
             'locales' => 'required|array|min:1',
             'default_locale_id' => 'required',
             'currencies' => 'required|array|min:1',
-            'base_currency_id' => 'required'
+            'base_currency_id' => 'required',
+            'logo.*' => 'mimes:jpeg,jpg,bmp,png',
+            'favicon.*' => 'mimes:jpeg,jpg,bmp,png'
         ]);
 
         $this->channel->update(request()->all(), $id);
diff --git a/packages/Webkul/Core/src/Http/Controllers/CurrencyController.php b/packages/Webkul/Core/src/Http/Controllers/CurrencyController.php
index 324257403..b87215b7e 100644
--- a/packages/Webkul/Core/src/Http/Controllers/CurrencyController.php
+++ b/packages/Webkul/Core/src/Http/Controllers/CurrencyController.php
@@ -125,12 +125,16 @@ class CurrencyController extends Controller
      */
     public function destroy($id)
     {
-        $result = $this->currency->delete($id);
+        try {
+            $result = $this->currency->delete($id);
 
-        if($result)
-            session()->flash('success', 'Currency deleted successfully.');
-        else
-            session()->flash('error', 'At least one currency is required.');
+            if($result)
+                session()->flash('success', 'Currency deleted successfully.');
+            else
+                session()->flash('error', 'At least one currency is required.');
+        } catch (\Exception $e) {
+            session()->flash('error', $e->getMessage());
+        }
 
         return redirect()->back();
     }
diff --git a/packages/Webkul/Ui/src/Resources/assets/js/components/image/image-item.vue b/packages/Webkul/Ui/src/Resources/assets/js/components/image/image-item.vue
index 8a15cc83d..ff04f1ed4 100644
--- a/packages/Webkul/Ui/src/Resources/assets/js/components/image/image-item.vue
+++ b/packages/Webkul/Ui/src/Resources/assets/js/components/image/image-item.vue
@@ -2,7 +2,7 @@
     <label class="image-item" :for="_uid" v-bind:class="{ 'has-image': imageData.length > 0 }">
         <input type="hidden" :name="finalInputName"/>
 
-        <input type="file" accept="image/*" :name="finalInputName" ref="imageInput" :id="_uid" @change="addImageView($event)"/>
+        <input type="file" v-validate="'mimes:image/*'" accept="image/*" :name="finalInputName" ref="imageInput" :id="_uid" @change="addImageView($event)"/>
 
         <img class="preview" :src="imageData" v-if="imageData.length > 0">
 
@@ -53,13 +53,18 @@
                 var imageInput = this.$refs.imageInput;
 
                 if (imageInput.files && imageInput.files[0]) {
-                    var reader = new FileReader();
+                    if(imageInput.files[0].type.includes('image/')) {
+                        var reader = new FileReader();
 
-                    reader.onload = (e) => {
-                        this.imageData = e.target.result;
+                        reader.onload = (e) => {
+                            this.imageData = e.target.result;
+                        }
+
+                        reader.readAsDataURL(imageInput.files[0]);
+                    } else {
+                        imageInput.value = "";
+                        alert('Only images (.jpeg, .jpg, .png, ..) are allowed.');
                     }
-
-                    reader.readAsDataURL(imageInput.files[0]);
                 }
             },
 
diff --git a/packages/Webkul/Ui/src/Resources/assets/js/components/image/image-wrapper.vue b/packages/Webkul/Ui/src/Resources/assets/js/components/image/image-wrapper.vue
index b72cf472c..60761cf70 100644
--- a/packages/Webkul/Ui/src/Resources/assets/js/components/image/image-wrapper.vue
+++ b/packages/Webkul/Ui/src/Resources/assets/js/components/image/image-wrapper.vue
@@ -60,16 +60,22 @@
             var this_this = this;
             
             if(this.multiple) {
-                this.images.forEach(function(image) {
-                    this_this.items.push(image)
+                if(this.images.length) {
+                    this.images.forEach(function(image) {
+                        this_this.items.push(image)
 
-                    this_this.imageCount++;
-                });
+                        this_this.imageCount++;
+                    });
+                } else {
+                    this.createFileType();
+                }
             } else {
                 if(this.images && this.images != '') {
                     this.items.push({'id': 'image_' + this.imageCount, 'url': this.images})
 
                     this.imageCount++;
+                } else {
+                    this.createFileType();
                 }
             }
         },
diff --git a/packages/Webkul/Ui/webpack.mix.js b/packages/Webkul/Ui/webpack.mix.js
index 62c9ba3ef..54dca326b 100644
--- a/packages/Webkul/Ui/webpack.mix.js
+++ b/packages/Webkul/Ui/webpack.mix.js
@@ -1,8 +1,8 @@
 const { mix } = require("laravel-mix");
 require("laravel-mix-merge-manifest");
 
-var publicPath = 'publishable/assets';
-// var publicPath = "../../../public/vendor/webkul/ui/assets";
+// var publicPath = 'publishable/assets';
+var publicPath = "../../../public/vendor/webkul/ui/assets";
 
 mix.setPublicPath(publicPath).mergeManifest();
 mix.disableNotifications();