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 ('2a5b965569fa7f837be853e62e3f1b12', -1, 1475118821, 1475118821, 'adf534ea', -1, 0)

Line : 158
File : sessions.php