Antivirus Logging

Hello all,

my nextcloud protocol is crouded with the following two lines:

Error files_antivirus OCA\Files_Antivirus\BackgroundScanner::run, exception: Session has been closed - no further changes to the session are allowed
Error PHP stream_wrapper_register(): Protocol ocencryption:// is already defined. at /var/www/nextcloud/lib/private/Files/Stream/Encryption.php#196

ClamAV antivirus is configured as “Daemon (Socket)”, socket=/var/run/clamav/clamd.ctl, propagation length=26214400, no file size limit, infected files should be deleted.

I don’t want to stop antivirus. Has anybody an idea what’s the reason for this messages and how I get rid of it.

Thank you in advance