Err:4 downloads.plex.tv/repo/deb public InRelease The following signatures couldn't be verified because the public key is not available:
6809
How do I fix the GPG error "NO_PUBKEY"?
31052
How to download and install a .deb file
4853
Trouble downloading packages list due to a "Hash sum mismatch" error
46419
The repository 'http://dl.google.com/linux/chrome/deb stable Release' does not have a Release file
76614
BAD signature when trying to verify SHA256SUMS for Bionic Beaver ISO
93571
The following signatures were invalid: EXPKEYSIG 1397BC53640DB551
8936
How do I install a 32-bit proprietary deb on a 64-bit system without causing dependency problems?
28247
Google Chrome PPA upgrade invalid signature
81853
W:Skipping acquire of configured file 'main/binary-1386/Packages' as repository... doesn't support architecture '1386'
4248
How to fix apt: Signature by key uses weak digest algorithm (SHA1)?
65
What can I do if a repository/PPA does not have a Release file?
12054
How do I deal with "unauthenticated sources" errors in the Software Center?
26745
Skipping acquire of configured file 'contrib/binary-i386/Packages' as repository ... doesn't support architecture 'i386'
151066
Failed to fetch PPA Error (Deluge)
50102
download.01.org certificate verification failed - CRLfile missing?
39924
unzip error "End-of-central-directory signature not found"
5991
Failed to create signature file