Database error on Manage Comments

Hello

When I go to Manage Comments and select any app like 'Forum' for example, I get a 'Database error' email.

Any help to fix this would be appreciated.

Query:

SELECT COUNT(*) FROM ``sys_cmts_ids INNER JOIN bx_forum_cmts cmts ON cmts.cmt_id = sys_cmts_ids.cmt_id INNER JOIN sys_profiles ON cmts.cmt_author_id=sys_profiles.id INNER JOIN sys_accounts ON sys_profiles.account_id= sys_accounts.id WHERE sys_cmts_ids.system_id = 8

Mysql error:

Incorrect table name ''

Location:

The error was found in _getDataSqCounter function in the file /home/pollener/public_html/inc/classes/BxDolGrid.php at line 419.

collation_connection:

utf8mb4_unicode_ci