phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f536b71c5c6d8a19fcc6f7108e0a8975' for key 'PRIMARY'

INSERT INTO sub_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('f536b71c5c6d8a19fcc6f7108e0a8975', -1, 1768024965, 1768024965, 'd849d81d', -4, 0, 0)

Line : 187
File : sessions.php