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 ('81e77155edc592c6360c517d0d8d2b39', -1, 1425212930, 1425212930, 'adf5385a', -9, 0)

Line : 158
File : sessions.php