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 ('eaf82c9e5bda0f074822947e7f3dfe9d', -1, 1713566021, 1713566021, '12dfab0c', -11, 0, 0)

Line : 187
File : sessions.php