Adding a null check to the whole AddressDoctor response object. HTTP …

…errors cause this object to not be filled, thus leading to a null pointer exception

backend/app/src/main/java/com/moh/phlat/backend/addressdoctor/service/AddressDoctorValidation.java

@@ -102,6 +102,12 @@ private AddressDoctorResults processAddressDoctorResults(SOAPEnvelopeOutput addr
 
 		AddressDoctorResults addressDoctorResults = new AddressDoctorResults();
 
+		if (addressDoctorResponse == null) {
+			addError(processData, "ValidationError", "ERROR", "Could not reach or get a response from the AddressDoctor service");
+			addressDoctorResults.setError(true);
+			return addressDoctorResults;
+		}
+
 		SOAPBodyOutput soapBody = addressDoctorResponse.getSoapBody();
 		if (soapBody == null) {
 			logger.error("The SOAP Body message is missing due to a possible PHLAT misconfiguration or an issue with AddressDoctor");