diff --git a/core/core.js b/core/core.js
index ce83dd8f..3dee1102 100644
--- a/core/core.js
+++ b/core/core.js
@@ -369,8 +369,8 @@ async function getProcessBlob(blobId, key, options) {
 			}
 			await process.task.execute({name: appSourceName, source: appSource});
 		} catch (error) {
-			if (process.app) {
-				process.app.send({action: 'error', error: error});
+			if (process?.task?.onError) {
+				process.task.onError(error);
 			} else {
 				printError({print: print}, error);
 			}