jsonschema.generate_validator is not able to resolve the internal schema reference pointing within the same document.

I am reading a schema from open api specification file which contains internal schema references like "$ref": "#/components/schemas/decimal" but when I try to generate validator with jsonschema.generate_validator, it gives me this error "reference not found: root:#/components/schemas/AddFundsTransferRq (at "components"). I also tried using external_resolver but it didn't work.