phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './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 ('47ca692f0e7d23c3f8e1ae0e509a1c62', -1, 1524330665, 1524330665, '36e02ca8', -1, 0, 0)

Line : 187
File : sessions.php