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 ('4fc90d9073839a1f1a5d3bd20a6b1e39', -1, 1714348580, 1714348580, '0a020003', -1, 0, 0)

Line : 187
File : sessions.php