Backup: open temp file: open /meta.00.pending: permission denied

Hey there,
after stoping a running backup due to errors while backing up I can not restart the backup process again. I`ve restarted influx and at least the whole server but still get the same error. I am using Influx V1.8.3.

#~/MongoDBBackup/20210503_i+m/influx$ sudo -u influxdb influxd backup /
2021/05/03 10:20:08 backing up metastore to /meta.00
backup: open temp file: open /meta.00.pending: permission denied

How can I solve this?