When I rename the page number only for one page it's working, but when i try to rename all it gives the Batch Rename window and after clicking Batch Rename button it give this error. I didn't have such problems before. I was able to rename for page # and page name all pages one by one, but not all together (the same locations for numbers and names)
Thanks for reporting. We will dig into this.
We just deployed an update to resolve this. Is it working properly for you now?
Yes, thank you, it is working now.