POST second request to /v1/create/rag raises unexpected 409 error

[tallshort]

╰─# curl -X POST http://127.0.0.1:8080/v1/create/rag -F "file=@paris.txt"

╰─# curl -X POST http://127.0.0.1:8080/v1/create/rag -F "file=@matview.md"
500 Internal Server Error: [qdrant] Failed to create collection: 409#

It's expected to consume multiple files via multiple /v1/create/rag requests.