Hello i have this error when made the db backup. I saw in this post but the solution remount to 2013
viewtopic.php?f=4&t=28344&p=108315&hilit=mysqldump%3A+Got+error%3A+1105%3A+Unknown+error+when+doing+refresh#p108315
mysqldump: Got error: 1105: "Unknown error" when doing refresh
perl /usr/share/astguiclient/ADMIN_backup.pl --db-only --debugX
----- DEBUG -----
----- SUPER DEBUG -----
----- Backup Database Only -----
----- Mysql dump -----
DBX- starting to backup database 0: asterisk
/usr/bin/mysqldump --user=cron --password=1234 --lock-tables --flush-logs asterisk | /usr/bin/gzip > /var/log/astguiclient/archive/temp/192.168.192.133asterisk3.gz
mysqldump: Got error: 1105: "Unknown error" when doing refresh
/usr/bin/tar cf /var/log/astguiclient/archive/192.168.192.133_ALL_3.tar /var/log/astguiclient/archive/temp
/usr/bin/tar: Removing leading `/' from member names
rm -f /var/log/astguiclient/archive/192.168.192.133_ALL_3.tar.gz
/usr/bin/gzip -9 /var/log/astguiclient/archive/192.168.192.133_ALL_3.tar
rm -fR /var/log/astguiclient/archive/temp
script execution time in seconds: 0 minutes: 0
DONE, Exiting...
CentOS Linux 7 (Core) || Linux 3.10.0-1160.25.1.el7.x86_64 || Asterisk 13.21.0-vici || 2.14b0.5 || mysql Ver 15.1 Distrib 5.5.68-MariaDB