fatal error TablePress and BackUpWordPress

hi there,
just discovered a problem.

when im activation BackUpWordPress together whit TablePress im getting this error on the pages TablePress is used:
Fatal error: ob_end_flush(): Cannot use output buffering in output buffering display handlers in /var/www/…/wp-includes/functions.php on line 3269
Already posted it to TablePress support (https://ww.wp.xz.cn/support/topic/fatal-error-after-update-38?replies=5#post-6814922) maybe it helps you to solve the problem.

Regards

https://ww.wp.xz.cn/plugins/backupwordpress/