Make it say Issue not found

templates/base/head_script.tmpl

@@ -38,6 +38,7 @@ If you introduce mistakes in it, Gitea JavaScript code wouldn't run correctly.
 			copy_error: {{ctx.Locale.Tr "copy_error"}},
 			error_occurred: {{ctx.Locale.Tr "error.occurred"}},
 			network_error: {{ctx.Locale.Tr "error.network_error"}},
+			issue_not_found: {{ctx.Locale.Tr "error.issue_not_found"}},
 			remove_label_str: {{ctx.Locale.Tr "remove_label_str"}},
 			modal_confirm: {{ctx.Locale.Tr "modal.confirm"}},
 			modal_cancel: {{ctx.Locale.Tr "modal.cancel"}},

web_src/js/components/ContextPopup.vue

@@ -95,14 +95,28 @@ export default {
 
       try {
         const response = await GET(`${appSubUrl}/${data.owner}/${data.repo}/issues/${data.index}/info`);
-        const respJson = await response.json();
+        const respText = await response.text();
+
+        // Necesary to handle stuff like 404 that require other error messages
+        let respJson = {};
+        try {
+          respJson = JSON.parse(respText);
+        } catch {}
+
         if (!response.ok) {
-          this.i18nErrorMessage = respJson.message ?? i18n.network_error;
+          if (respJson.message) {
+            this.i18nErrorMessage = respJson.message;
+          } else if (response.status === 404) {
+            this.i18nErrorMessage = i18n.issue_not_found;
+          } else {
+            this.i18nErrorMessage = i18n.error_occurred;
+          }
           return;
         }
         this.issue = respJson;
-      } catch {
+      } catch (e) {
-        this.i18nErrorMessage = i18n.network_error;
+        console.error('Error loading issue info:', e);
+        this.i18nErrorMessage = i18n.error_occurred; // No it is not a network error
       } finally {
         this.loading = false;
       }