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 ('8b8e528c0bc1fd2a17ffb374fc940d1f', -1, 1748417960, 1748417960, '12dec288', -9, 0, 0)

Line : 190
File : sessions.php