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 ('bf9d0b02af75fa1f9f68bd03c3f7c7a6', -1, 1713537196, 1713537196, '038aafb4', 2, 0, 0)

Line : 187
File : sessions.php