SQL syntax error for syslog when click browser back button

[yingbaiibm]

Reproduce steps:

1. Go to syslog alert logs page
2. Click Clear button
3. Click a syslog alert to drill down to Selected Alert page
4. Click browser back button, page show empty, error exist.

2020/03/27 03:05:29 - CMDPHP SQL Backtrace: (/plugins/syslog/syslog.php[97]:syslog_view_alarm(), /plugins/syslog/syslog.php[152]:syslog_db_fetch_cell(), /plugins/syslog/database.php[77]:db_fetch_cell(), /lib/database.php[383]:db_fetch_cell_prepared(), /lib/database.php[399]:db_execute_prepared())
2020/03/27 03:05:29 - CMDPHP ERROR: A DB Cell Failed!, Error: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1

[yingbaiibm]