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 ('01985320c48bf89e7ff39b25aa23fb4d', -1, 1488063029, 1488063029, 'ae8172d3', 13, 0, 0)

Line : 187
File : sessions.php