Knowledg ERROR | TypeError: Knowledge.__init__() missing 1 required positional argument: 'collection_name'`

CrewAI Community Support
, ,
1

I found an example of knowledge here:
docs/how-to/mlflow-observability.mdx

 content = "Users name is John. He is 30 years old and lives in San Francisco."
  string_source = StringKnowledgeSource(
      content=content, metadata={"preference": "personal"}
  )

crew = Crew(
              agents=[city_selector_agent, local_expert_agent],
              tasks=[identify_task, gather_task],
              verbose=True,
              memory=True,
              knowledge={
                  "sources": [string_source],
                  "metadata": {"preference": "personal"},
              },
          )

I want to stick with the documentation.
I am getting an error

TypeError: Knowledge.__init__() missing 1 required positional argument: 'collection_name'

Anyone know where to add the ‘collection_name’`

Also, anyone have an example using ollama with knowledge in crew.py kicked off from main.py?