From Setup | Customize | Object | Fields | Click on the Concerned field | Click View Field Accessibility| Click on the Hidden on the concerned Profile https://qsnapnet.com/snaps/m91ozam0w0l766r | Mark it visible: https://qsnapnet.com/snaps/ip727wbwwxcu9pb and click Save.
Follow this step for all the fields with the concerned object thrown in error. And upload the updated WSDL file in WWS Connector. It will fix this issue.