PUT /update_machine_status_v1 501: Not working for some specific idle machine
This problem happens for SOME machine, but other machines are working fine.
After clicking the washing machine icon, a "Pay $2.50" button is expected to appear. But the green button is always loading, the "Pay $2.50" never appear.
In backend, it shows error message "code 501, message Unsupported method ('PUT') "PUT /update_machine_status_v1 HTTP/1.1" 501 -"