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 ('b9bb750668e3743c51adfe5a41a0d4ac', -1, 1713492308, 1713492308, '03913f88', -11, 0, 0)

Line : 187
File : sessions.php