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 ('711abf0a5fbb88bcc614432ab88d3cce', -1, 1714152599, 1714152599, '03101dd1', -9, 0, 0)

Line : 187
File : sessions.php