Those errors are from MEGA which is why we ask for a rclone.conf and a full command and a full log.
Resolve errors | Google Drive API | Google Developers
[See Bugtracker] mega 509 bandwidth limit exceeded - JDownloader Community - Appwork GmbH
509 Bandwidth Limit Exceeded using Mega Pro Account with jDownloader : MEGA (reddit.com)
Mega doesn't let me start any download (509 bandwidth limit exceeded) : jdownloader (reddit.com)
etc.