RuntimeError when indexing with FAISS

I'm getting this error when I try to index document with FAISS. Is there way change number or cluster?
`RuntimeError: Error in void faiss::Clustering::train_encoded(faiss::idx_t, const uint8_t*, const faiss::Index*, faiss::Index&, const float*) at /project/faiss/faiss/Clustering.cpp:261: Error: 'nx >= k' failed: Number of training points (109) should be at least as large as number of clusters (128)`

Start by tracing the document-indexing entry point that invokes FAISS and compare its cluster count with the 109 training points reported in the error. Determine how the number of clusters can be changed or validated, and consider the issue done when indexing a smaller document set no longer raises this RuntimeError.

Written by the indexing model from the issue text.