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 ('c2cccd4ead82428c32bd072e4d53fe61', -1, 1713859385, 1713859385, '03850cac', 4, 0, 0)

Line : 187
File : sessions.php