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 ('75b1803d8606c8a95ab4ee4f02b2a96e', -1, 1713936244, 1713936244, '12759926', -4, 0, 0)

Line : 187
File : sessions.php