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 ('ab7bcc57e09a5d9f7990a4c62dbe3ead', -1, 1713742961, 1713742961, '2cd263d1', 0, 0, 0)

Line : 187
File : sessions.php