phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('7844c996d7e37e2a60966189c11e2afd', -1, 1414823251, 1414823251, '36a7b16f', 15, 0, 0)

Line : 187
File : sessions.php