phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('e0046c4b2a98235a6c4c41a885676858', -1, 1713585674, 1713585674, '0395ffa2', -11, 0, 0)

Line : 187
File : sessions.php