Streamlit and Chroma DB issue: sqlite3.OperationalError: no such table: collections

I am creating a RAG application with streamlit and I am using Chroma DB to store my collections. Depending on the persist_collection parameter, I am using either chromadb.PersistentClient or chromadb.EphemeralClient.

def __get_chroma_client(self) -> Chroma:
    # Return persistent client
    if self.persist_collection:
        return Chroma(
            collection_name=self.collection_name,
            embedding_function=OllamaEmbeddings(model="all-minilm"),
            client=PersistentClient(
                path="./data/chroma_db",
                settings=Settings(
                    anonymized_telemetry=False,
                )
            )
        )

    # Return ephemeral client
    return Chroma(
        collection_name=self.collection_name,
        embedding_function=OllamaEmbeddings(model="all-minilm"),
        client=EphemeralClient(
            settings=Settings(
                anonymized_telemetry=False,
            )
        )
    )

The collection is then initiated as self.__collection = self.__get_chroma_client()

Every time there are new documents I am asynchronously updating the collection

await self.__collection.aadd_documents(documents=chunks)

Then I am using the as_retriever method to get the context for my LLM model

    retriever = self.__collection.as_retriever(
        search_type=self.search_function,
        search_kwargs=self.search_params
    )

    context = ' '.join(
        [doc.page_content for doc in retriever.invoke(query)]
    )

The problem is only present when working with chromadb.EphemeralClient.

• After the collection is created initially and is populated with documents, I can get the context.
• In the next run, new documents are added to the collection, the retriever is created, and when calling the invoke method the following exception is thrown:

sqlite3.OperationalError: no such table: collections

I couldn't find the solution for that yet, does anyone know the underlying rootcause? As mentioned above, it does NOT happen with PersistentClient.