phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './vrforum/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 ('bf52a39e8dbde63aeea9fbe9cfddd1c6', -1, 1488235563, 1488235563, '36c54918', -1, 0, 0)

Line : 187
File : sessions.php