Error when using OpenSearch and LocalAI

[genwch]

I have 2 similar 'Chatflows'
fig1 - use in-memory vector store
fig2 - use open search vector store
but get difference result.
when using in-memory, it is same as expected.
when using open search, it returned 'Illegal invocation'
attached sample text file for easy debug.

[fig1]

[fig2]

sample.txt

[chungyau97]

Could you try OpenAI models with OpenSearch vector store?