Cannot upload netfile to CRA

[su27mig31]

Showing the following error
Response Type: FAULT

Fault Details:
Failed to access the WSDL at: https://apps.cra-arc.gc.ca/ebci/pfno/ws/services/FileReturnService?WSDL. It failed with: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target.

[su27mig31]

additional info.

Reported no internet error while using the application to upload the file. and reported the above error while using manual upload method

[TurboTaxSusan]

The CRA is currently having an issue with their NETFILE systems. They usually resolve these types of quickly, so please try again in a few hours.