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 ('eb89fd1d7f907405cbc9e0e3438c4705', -1, 1711649837, 1711649837, '22cbdd68', -2, 0, 0)

Line : 187
File : sessions.php