Not able to get ppd list from cups server.

[prashant p]

Distro Name : Ubuntu 20.10
Printers : All

While adding printer through hplip not able to get get ppd list from cups server.
From localhost also not able select hp ppd.
     Steps to reproduce:
1. Open browser
2. Go to localhost:631 > administration
3. Add printer > select printer ( not ask for custom ppd direct redirect to successful window)

This issue is inconsistent 5-6 time not working out 10 tries.
The same code is working fine on ubuntu 20.04 which has same cups version as 20.10.

Installed Package:
Cups : 2.3.3
Cups-devel : 2.3.3-3
Cups-image : 2.2.3-3

Error with our code:
Error : No ppd found for model “Model name”

Any update or changes that will fix this issue.