Tag showing 404 error but everything is good from my side

Hi All I am running a website https://femaleescortchandigarh.in
Some tags are showing 404 error in Ahref even those tags are used in my post. But it is still showing 404 error.
Things I had done till now

  1. Changed WordPress theme
  2. Removed Cache plugin and purged all cache
  3. Changed permalinks

Nothing is working for me please help me out what should I do? I am facing this error on some tags only. Please this tag
https://femaleescortchandigarh.in/tag/shimla-escort-service/
https://femaleescortchandigarh.in/tag/russian-escort-in-shimla/
Please help me out what should I do?