trying the python fhir example and getting an error AttributeError: 'NoneType' object has no attribute 'serialize'

It is erroring on this line

#Part 3---------------------------------------------------------------------------------------------------------------------------------------------------- #Now we want to get a certain patient and add his phone number and change his name before saving our changes in the server #Get the patient as a fhir.resources Patient of our list of patient resources who has the right name, for convenience we will use the patient we created before patient0 = Patient.parse_obj(patients_resources.search(family='familyname',given='givenname1').first().serialize())

#Part 3----------------------------------------------------------------------------------------------------------------------------------------------------

#Now we want to get a certain patient and add his phone number and change his name before saving our changes in the server

#Get the patient as a fhir.resources Patient of our list of patient resources who has the right name, for convenience we will use the patient we created before

I edited the line to have the family name and one of the given names I entered earlier and it still errors

patient0 = Patient.parse_obj(patients_resources.search(family='Foobar',given='MyName').first().serialize())

If I switch to the first givename it works

# Create a HumanName and fill it with the information of our patient

name = HumanName()

name.use = "official"

#name.family = "familyname"

name.family = "Foobar"

#name.given = ["givenname1", "givenname2"]

name.given = ["MyName", "MyName1"]

Got past that point, now I am getting this error at the save line

"diagnostics": "<HSFHIRErr>MalformedRelativeReference",