phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './d7420_phpbb/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 ('3b1a803fd91175d9cfb972aba74a93b6', -1, 1508422787, 1508422787, '7f000001', -1, 0, 0)

Line : 187
File : sessions.php