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 ('7c9f0e3cc1d44cd3e7046e6b359bb9ef', -1, 1503053074, 1503053074, '36a6ae30', 26, 0, 0)

Line : 187
File : sessions.php