phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './twcsg_phpb1/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 ('d352d7e43e88f9f300dcd7e776568f7e', -1, 1425639691, 1425639691, '36ccba4d', -1, 0, 0)

Line : 172
File : sessions.php