'Error 'Not Found from' on solr when try to '/update/extract' an a upload file

Win 11 / Apache Solr 8.11.1

I'm beginning on Apache Solr and i'm tring to reproduse a exemple founded on a YouTube video.

Summing up: I created a core on cdm terminal and i'm tring to upload a CVS file from one of solr's examples, but always shows this error:

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