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 ('69040cd42112f40a0c1fc8bc5adf615e', -1, 1524338017, 1524338017, '36c6867f', -1, 0, 0)

Line : 187
File : sessions.php