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) VALUES ('c4cda49ce0d5cb4a57d2876165910ddf', -1, 1714047508, 1714047508, '030f039a', -4, 0)

Line : 158
File : sessions.php