Fatal error: SQL ERROR [ mysqli ]

Table '.\yagurgan\phpbb_sessions' is marked as crashed and should be repaired [145]

An sql error occurred while fetching this page. Please contact an administrator if this problem persists. in D:\inetpub\wwwroot\BSmartSites\yagur2019_bsmart_co_il\forum\includes\db\dbal.php on line 707