diff --git a/web_src/js/components/ContextPopup.vue b/web_src/js/components/ContextPopup.vue
index 3e1ff305c6..cf157461e8 100644
--- a/web_src/js/components/ContextPopup.vue
+++ b/web_src/js/components/ContextPopup.vue
@@ -13,7 +13,7 @@ const props = defineProps<{
 const loading = shallowRef<boolean>(false);
 const issue = shallowRef<Issue>(null);
 const renderedLabels = shallowRef<string>('');
-const errorMessage = shallowRef<string | null>(null);
+const errorMessage = shallowRef<string>(null);
 
 const createdAt = computed(() => {
   return new Date(issue.value.created_at).toLocaleDateString(undefined, {year: 'numeric', month: 'short', day: 'numeric'});