phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpbb/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 ('05b48041a5dbfa8306427142f729d662', -1, 1484770653, 1484770653, '36928bc9', -1, 0, 0)

Line : 187
File : sessions.php