phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './why9work_phpbb1/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) VALUES ('7d107f827e297f523de57dd2e6bc9037', -1, 1475329330, 1475329330, '6ca2db82', -9, 0)

Line : 158
File : sessions.php