phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './messageboard/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 ('a1b23c2aa68718497e693f6e9bfb6a05', -1, 1493018162, 1493018162, '36c43527', 1, 0, 0)

Line : 187
File : sessions.php