Runtime Error, Attempt To invoke Virtual Method

Getting Error

“Attempt to invoke virtual method ‘com.google.android.gms.maps.model.Marker
com.google.android.gms.maps.GoogleMap.addMarker(com.google.android.gms.maps.model.MarkerOptios)’ on a null object reference”
I have stored users Latitude And Longitude in TinyDB and When I call them it Gets The Right Value But Not Working
Here Are My Blocks

In order to update marker you have to added first or else will throw an exception

image

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how add a marker??

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I tried this but still not working

Finally I Solved With This Blocks


And @dora_paz This Also Helped Me.

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