phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO satshop_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('06af1fdeb0e99e9f5a6b9efef6928d4e', -1, 1752429614, 1752429614, 'd849d8b2', -7, 0, 0)

Line : 189
File : sessions.php