Show the error too

This is getting annoying

src/utils/store-utils.js

@@ -44,7 +44,7 @@ export function getCurrentInstance() {
     return (currentInstance = instances[instance]);
   } catch (e) {
     console.error(e);
-    alert('Failed to load instance configuration. Please try again.');
+    alert(`Failed to load instance configuration. Please try again.\n\n${e}`);
     // Temporary fix for corrupted data
     store.local.del('instances');
     location.reload();