../../../.pub-cache/hosted/pub.dartlang.org/watson_assistant_v2-0.0.1/lib/watson_assistant_v2.dart:78:151: Error: The argument type 'String' can't be assigned to the parameter type 'Uri'.
'Uri' is from 'dart:core'.
'${watsonAssistantCredential.url}/assistants/${watsonAssistantCredential.assistantID}/sessions?version=${watsonAssistantCredential.version}',
I managed to move on the steps correct but still i dont know why such error show up!