phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './tripleac_Forum/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 ('a4a51a9d845d386127c0de3ea75f2b66', -1, 1462006741, 1462006741, '36f28286', -1, 0, 0)

Line : 187
File : sessions.php