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 ('27e3896114308e14e4f9b905e8571bbf', -1, 1750166477, 1750166477, 'd849d886', -2, 0, 0)

Line : 190
File : sessions.php