Thank you very much.
The errors showed from log when I uploaded new video.
Anyway, The problem pending converting just happened with some accounts in kaltura.
tail -f /opt/kaltura/log/batch/*`date +%Y-%m-%d`*.log /opt/kaltura/log/kaltura_batch.log | grep -A 1 -B 1 --color "ERR:\|trace\|CRIT\|\[error\]"
' in /opt/kaltura/app/batch/client/KalturaClientBase.php:401
Stack trace:
#0 /opt/kaltura/app/batch/client/KalturaClient.php(1122): KalturaClientBase->doQueue()
--
' in /opt/kaltura/app/batch/client/KalturaClientBase.php:401
Stack trace:
#0 /opt/kaltura/app/batch/client/KalturaClient.php(1122): KalturaClientBase->doQueue()