use finished

apps/app/src/server/service/export.js

@@ -355,7 +355,7 @@ class ExportService {
     // finalize the archive (ie we are done appending files but streams have to finish yet)
     // 'close', 'end' or 'finish' may be fired right after calling this method so register to them beforehand
     archive.finalize();
-    await stream;
+    await finished(stream);
 
     logger.info(`zipped GROWI data into ${zipFile} (${archive.pointer()} bytes)`);