com.apollographql.apollo.exception.ApolloHttpException: HTTP 500 Internal Server Error - apollo

Question

I keep getting the HTTP 500 Internal Server Error in my android studio trying to call a loginQuery with apollo client for android, following this tutorial : link to apollo docs
Yet when I run the same query in graphiQL in my browser, it succeeds.
here's a picture of the error in studio :
here's my code:
String userNumber = numberInput.getText().toString();
String password = passwordInput.getText().toString();
Intent intent;
LogInQuery logInQuery = LogInQuery.builder().nationalID(userNumber).password(password).build();
apolloClient.query(logInQuery).enqueue(new ApolloCall.Callback<LogInQuery.Data>() {
#Override
public void onResponse(#NotNull Response<LogInQuery.Data> response) {
LogInQuery.Data data = response.getData();
List<Error> error = response.getErrors();
assert error != null;
String errorMessage = error.get(0).getMessage();
assert data != null;
Log.d(TAG, "onResponse: " + data.login() + "-" + data.login());
if(data.login() == null){
Log.e("Apollo", "an Error occurred : " + errorMessage);
runOnUiThread(() -> {
// Stuff that updates the UI
loading.setVisibility(View.GONE);
Toast.makeText(LogInActivity.this,
errorMessage, Toast.LENGTH_LONG).show();
});
} else {
runOnUiThread(() -> {
// Stuff that updates the UI
loading.setVisibility(View.GONE);
Toast.makeText(LogInActivity.this,
"New User Created!", Toast.LENGTH_LONG).show();
//Intent intent = new Intent(LogInActivity.this, LogInActivity.class);
//startActivity(intent);
});
}
}
#Override
public void onFailure(#NotNull ApolloException e) {
runOnUiThread(() -> {
Log.e("Apollo", "Error", e);
Toast.makeText(LogInActivity.this,
"An error occurred : " + e.getMessage(), Toast.LENGTH_LONG).show();
loading.setVisibility(View.GONE);
});
}
});
}
I can't find much on the internet to help me solve it. If it's duplicate, direct me to the correct answer.

Answer 1

Check your API in Postman. It's working fine or not! Please share API if possible.