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 ('86216d4f5378b54217ad1d9a4800f508', -1, 1425100696, 1425100696, '36a632d5', 0, 0, 0)

Line : 172
File : sessions.php