apt-get update: Clearsigned file is not valid, got 'NODATA'
24355
Got NODATA issue: 'NODATA' (does the network require authentication?)
121462
Fixing a broken packet system (apt-get)
16578
How to upgrade a single package using apt-get?
12960
How to fix "not a valid identifier" error after setting environment variables?
6105
What is the easiest way to resolve apt-get BADSIG GPG errors?
114246
apt-get update, unlinking
11909
404 error with apt-get update, Don't have any PPA's
122588
Can't connect to ubuntu archive when using apt-get update
7181
apt-get is stuck at "Fetched XXKb in XXsec"
1632
How do I fix a "Failed to download package files" error?
39732
How to fix apt-get install / update not working on my Kali Linux
1512
Make apt-get (or aptitude) run with -y but not prompt for replacement of configuration files?
135985
Apt-get saying "Unable to correct problems, you have held broken packages."
158683
apt-get update failed because certificate verification failed because handshake failed on nodesource
60351
How can I update to a newer version of Git using apt-get?
13720
apt-get update fails to fetch files, “Temporary failure resolving …” error
35931
Apt update error - "An error occurred during the signature verification" (Chrome)