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 ('ebfa43a9b3257cedfb5b467c3c4e5d8c', -1, 1498287112, 1498287112, '3650343b', -1, 0, 0)

Line : 187
File : sessions.php