Error 500 when sending the signed pdf

[edneiCristian]

Hi guys.
When I try to sign a pdf document. the document is not uploading to alfresco.
Auto signature opens normally, I select the signature but completes the signature.

By firefox informs that :Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://127.0.0.1:60389/afirm. (Reason: CORS request did not succeed). Status code: (null).

By Chrome and Edger informs: Post https://127.0.0.1:58617/afirma net:: ERR_CONNECTION_REFUSED

I'm using docker version 7.2

If you have any direction, thanks in advance.