phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './for_adeviq/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 ('2cd4561fe228d2f5dea0c6c1e3935aa2', -1, 1513463246, 1513463246, '36f2cd21', -4, 0, 0)

Line : 187
File : sessions.php