Nintex Form: Fail to Publish

Hi All,

I created a Nintex Form on the SharePoint List, and I can save the form, but when I publish it, I got the following message:Both of the following post cannot solve my issue:

https://community.nintex.com/t5/Nintex-for-Office-365/failed-to-publish-form/m-p/74014#M9929

(I am a site admin, and I have full control in the site collection, and I can save the form)

https://community.nintex.com/t5/Technical-Issues/Error-quot-Failed-to-Publish-quot-in-Nintex-Form-for-Office-365/ta-p/86479

(I can go to the "NintexFormXML" library, but cannot found any file)

After that, I trace the issue through F12 in Chrome, I found the following error when I open the form in Nintex Form App:

Seem it cannot get the xml file from the "NintexFormXml" library. So that, I guess the issue is due to the xml file fail to generated??

And I tried to re-add the Nintex Form in site content, but no luck.

Any idea? or solution I can try?

Many thanks!