{"detail":"an index with name graphragindex already exists and has not finished building."}

[Mohammad-DSAI]

when i run cells of quickstart notebook of graphrag accelerator, i get this results: {"detail":"an index with name graphragindex already exists and has not finished building."}
and the result of query is :
Internal Server Error
b'{"detail":"2bad1f4c4b2e8a.... not ready for querying."}'
CPU times: user 8.96 ms, sys: 1.72 ms, total: 10.7 ms
Wall time: 557 ms
<Response [500]>
. please tell me how to resolve this problem.