Help/Support Repos not updating on my iOS 10 device, not listing packages for several

[i0s_tweak3r 12.4k iPhone X 13.5]

I've tried refreshing sources as well as using terminal apt-get update and neither works. Here's the error screenshot in Cydia:

It doesn't even list BigBoss items or several other popular repos, and less popular ones like my own. ?

PS Plz don't judge the list of repos installed on error messages. I swear I never used Sextube! ?

Edited to add: Insanely isn't causing any issues on my 9.3.3 device.

Updated July 27, 2017 by i0s_tweak3r
Adding info

[i0s_tweak3r 12.4k iPhone X 13.5]

Sorry what a lame reason. I figured it out finally. When running apt-get update in terminal a repo kept timing out, and causing trouble, rasha1.in/repo, so I deleted that and suddenly all is good again.

[ExtremeDrone 8.1k iPad Mini 4 11.3.1]

Purge it next time then run autoclean and autoremove this seams to help me most the time  i.e apt-get purge , apt-get autoclean, apt-get autoremove. Lastly if I'm still not sure apt-get check.