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 ('0e0d5c9e8e03c6e83ad303d518fa895b', -1, 1469919105, 1469919105, '6b161810', -4, 0, 0)

Line : 187
File : sessions.php