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 ('027cb50dcb960b40b3b9b023cb260080', -1, 1748121404, 1748121404, '0d3a73ec', -9, 0, 0)

Line : 190
File : sessions.php