phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './intranet_udsm/tbl_sessions' is marked as crashed and should be repaired

INSERT INTO tbl_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('21b6ebf5e3c99d5cc194a4d9d1f6fea4', -1, 1425237383, 1425237383, '36a7ae4a', -4, 0, 0)

Line : 187
File : sessions.php