$.ajax call not work in erpnext app / app browser

Hi guys,

I had facing an issue whereby my ajax call unable to call in android/ios chrome browser OR erpnext app.

It work perfectly well in desktop chrome browser. Anyone could help me on this ?

and picture below is my remote debug for web browser on samsung device.

Wait, seem like hitting this error in the frappe log:

Which means i unable to connect to the server through the ajax right ?