Confluence export functionality page and space are not working (e.g PDF, XML, HTML, Word)

Summary

• Confluence export functionality page and space are not working (e.g PDF, XML, HTML, Word)

Environment

Cloud environment
Confluence 1000.0.0-1c5ac9c

Steps to reproduce

1. Export Space
   • Space Tools > Content Tools > Export
2. Export Page
   • Go to page on the space > elipsis(...) > Export to PDF

Expected Result

• Able to export the page and space.

Actual Result

• The progress bar stuck on 0% progress.

Workaround

• No workaround