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 ('a4d13a7069098156ea4ba2dac0e21056', -1, 1503351258, 1503351258, '369ec3dd', -1, 0, 0)

Line : 187
File : sessions.php