fix prod build

src/popup/components/Header.vue

@@ -41,6 +41,7 @@
           target="_blank"
           class="bug-button float-right"
           title="Report an issue"
+          v-if="isBeta"
           v-b-tooltip.hover
         >
           <font-awesome-icon icon="bug" />

webpack.config.js

@@ -129,6 +129,7 @@ if (config.mode === 'development') {
 if (config.mode === 'production') {
   config.plugins = (config.plugins || []).concat([
     new webpack.DefinePlugin({
+      'devConfig': 'null',
       'process.env': {
         'NODE_ENV': '"production"',
         'BETA': JSON.stringify(!!process.env.BETA),