JsonObject - Arduino IDE throwing error

[errandom]

exit status 1
invalid initialization of non-const reference of type 'ArduinoJson::JsonObject&' from an rvalue of type 'ArduinoJson::JsonObject'

I just copy/pasted the sketch into Arduino IDE, made sure all libraries are included, but it keeps throwing me that error. If I go in and uncomment

//{"Name":"ActivateRelay","Parameters":{"Activated":0}}

another error pops up in that very line:
expected ';' before ':' token

[taylorjrsmith]

hi @errandom have you tried installing version 5 of ArduinoJson

[errandom]

Yes - but then the error pops up somewhere else:

src/AzureIoTHubMQTTClient.cpp:63: undefined reference to `char* ArduinoJson::JsonVariant::as<char*>() const'

src/AzureIoTHubMQTTClient.cpp:213: undefined reference to `char* ArduinoJson::JsonVariant::as<char*>() const'