Marker on google map not appear

Hi, good day everyone…i want to know why my markers i created in JSON text cannot be read and unable to display on google map. The block of my JSON is like this:
And the JSON must read my data in spreadsheet, the data like this:

so far, i have done my blocks like this:

but when i export the apk and run the apps, the result is like this:

Can someone help me on this, I really need this to be solved for my school project :sob: :pray: :pray: :pray:

A post was merged into an existing topic: Why marker doesnt appear on map?