Trust anchor for certification path not found - 2

this problem had been discussed at least 2 times
Repository with SSL - problem in to do the download - General - F-Droid Forum
Trust anchor for certification path not found - General - F-Droid Forum

using samsung galaxy tab s2 lte with android 7. there are no new updates from samsung. i get this error by adding the newpipe repo.

now i have to rely on f-droid team to deliver updates as soon as possible (that’s why i used the newpipe repo - fast update deliveries)

trust anchor for certification path not found · Issue #11203 · TeamNewPipe/NewPipe (github.com)

and Running on old Android versions | F-Droid - Free and Open Source Android App Repository

i posted this on my own, i am hueldoeu