appsmithorg/appsmith · error · Error

Failed importing template

Error message

Failed importing template

What it means

Error thrown by the template-import flow when failFastApiCalls reports failure across the batch of fetchActions / fetchJsActions / fetchDatasources / fetchJSLibraries. The template cannot finish importing until every referenced entity is fetched, so the saga aborts at this gate before moving to plugin form configs.

Source

Thrown at app/client/src/sagas/TemplatesSagas.ts:250

      fetchDatasources(),
      fetchJSLibraries(applicationId),
    ],
    [
      ReduxActionTypes.FETCH_ACTIONS_SUCCESS,
      ReduxActionTypes.FETCH_JS_ACTIONS_SUCCESS,
      ReduxActionTypes.FETCH_DATASOURCES_SUCCESS,
      ReduxActionTypes.FETCH_JS_LIBRARIES_SUCCESS,
    ],
    [
      ReduxActionErrorTypes.FETCH_ACTIONS_ERROR,
      ReduxActionErrorTypes.FETCH_JS_ACTIONS_ERROR,
      ReduxActionErrorTypes.FETCH_DATASOURCES_ERROR,
      ReduxActionErrorTypes.FETCH_JS_LIBRARIES_FAILED,
    ],
  );

  if (!afterActionsFetch) {
    throw new Error("Failed importing template");
  }

  const afterPluginFormsFetch: boolean = yield failFastApiCalls(
    [fetchPluginFormConfigs()],
    [ReduxActionTypes.FETCH_PLUGIN_FORM_CONFIGS_SUCCESS],
    [ReduxActionErrorTypes.FETCH_PLUGIN_FORM_CONFIGS_ERROR],
  );

  if (!afterPluginFormsFetch) {
    throw new Error("Failed importing template");
  }

  yield put(fetchAllPageEntityCompletion([executePageLoadActions()]));
}

function* forkTemplateToApplicationSaga(
  action: ReduxAction<{
    pageNames?: string[];

View on GitHub (pinned to 8cd9021c24)

Solutions

1. Open DevTools Network, filter to the import-window requests, and find which fetch returned non-2xx.
2. Install any plugin the template depends on before re-importing.
3. Re-check that required JS libraries are installed in Libraries settings.
4. Retry the import on a stable connection; partial state from a failed import may need to be cleaned up first.

// Pre-flight: confirm required plugins and libraries are present
if (!hasPlugin(templatePluginId) || !hasLibrary(templateLibName)) {
  showAlert('Install missing dependencies before importing', 'error');
  return;
}

When it happens

Trigger: Any of the parallel post-import fetches returned its *_ERROR variant — a datasource fetch 5xx, a JS action fetch failure, a JS library CDN timeout, or a network drop during the batch.

Common situations: Template references a plugin not installed in the workspace; the workspace's installed JS libraries differ from the template; importing on an unstable connection; server under load returning intermittent 5xx.

Related errors

• ${extractExecutionErrorMessage(e)}
• Save page failed
• Failed to load JS libraries
• Unable to fetch newly created actions
• The script at ${url} cannot be installed.

AI-assisted analysis of appsmithorg/appsmith@8cd9021c24 (2026-08-12). Data as JSON: /api/errors/edd5009db22a4b43. Report an issue: GitHub.