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 ('19d6d5500f5d4b35b2ab6a3d194d0ee3', -1, 1713999281, 1713999281, '03902ac4', -7, 0, 0)

Line : 187
File : sessions.php