catching errors while retrieving git info

src/plugins/imagery/components/FilterSettings.vue

@@ -14,6 +14,8 @@
                     type="range"
                     min="0"
                     max="500"
+                    draggable="true"
+                    @dragstart.stop.prevent
                     @change="notifyFiltersChanged"
                     @input="notifyFiltersChanged"
                 >
@@ -24,6 +26,8 @@
                     type="range"
                     min="0"
                     max="500"
+                    draggable="true"
+                    @dragstart.stop.prevent
                     @change="notifyFiltersChanged"
                     @input="notifyFiltersChanged"
                 >

src/plugins/imagery/components/ImageControls.vue

@@ -21,7 +21,11 @@
  *****************************************************************************/
 
 <template>
-<div class="h-local-controls h-local-controls--overlay-content h-local-controls--menus-aligned c-local-controls--show-on-hover">
+<div
+    class="h-local-controls h-local-controls--overlay-content h-local-controls--menus-aligned c-local-controls--show-on-hover"
+    role="toolbar"
+    aria-label="Image controls"
+>
     <imagery-view-menu-switcher
         :icon-class="'icon-brightness'"
         :title="'Brightness and contrast'"

webpack.common.js

@@ -7,12 +7,19 @@ const webpack = require('webpack');
 const MiniCssExtractPlugin = require("mini-css-extract-plugin");
 
 const {VueLoaderPlugin} = require('vue-loader');
-const gitRevision = require('child_process')
-    .execSync('git rev-parse HEAD')
-    .toString().trim();
-const gitBranch = require('child_process')
-    .execSync('git rev-parse --abbrev-ref HEAD')
-    .toString().trim();
+let gitRevision = 'error-retrieving-revision';
+let gitBranch = 'error-retrieving-branch';
+
+try {
+    gitRevision = require('child_process')
+        .execSync('git rev-parse HEAD')
+        .toString().trim();
+    gitBranch = require('child_process')
+        .execSync('git rev-parse --abbrev-ref HEAD')
+        .toString().trim();
+} catch (err) {
+    console.warn(err);
+}
 
 /** @type {import('webpack').Configuration} */
 const config = {