The post indicates a version mismatch between llama-index 0.10.43 and llama-index-core 0.10.43.post1. A community member suggests that post1 was a small internal patch, and recommends installing llama-index-core 0.10.43 to resolve the issue.
llama-index 0.10.43
llama-index-core 0.10.43.post1
post1
llama-index-core 0.10.43