repo error

Hi Team, I am getting below error while running sudo apt-get update on freeradius server. PPA repo was added for freeradius and the source didn't have a release file, it was causing validation issues with APT Python API. Please refer to the error below: ----------ERROR------- Traceback (most recent call last): File "/usr/lib/python3/dist-packages/apt/cache.py", line 544, in update pulse_interval) apt_pkg.Error: E:The repository ' http://ppa.launchpad.net/freeradius/stable-3.0/ubuntu bionic Release' does not have a Release file. Regards Aditya Vijjan