linuxcnc-2.7-wheezy.iso actually distribution update errors

after installing with linuxcnc-2.7-wheezy.iso only the first part of updates can be downloaded as usual, but further updates fail, so we can not get and install "gedit" e.g.

Will need to see the errors and your sources file.

deb http.debian.net/debian wheezy main contrib non-free
deb-src http.debian.net/debian wheezy main contrib non-free
deb http.debian.net/debian wheezy-updates main contrib non-free
deb-src http.debian.net/debian wheezy-updates main contrib non-free
deb security.debian.org/ wheezy/updates main contrib non-free
deb-src security.debian.org/ wheezy/updates main contrib non-free

ping to server is ok but something in the mirror may be not good?

Your mirrors specifically "http.debian.net" are wrong.

Check this list out and make your choice.
www.debian.org/mirror/list

if you do a new install consider to use Uspace
from here
www.linuxcnc.org/testing-stretch-rtpreempt/

thank you, it is good to know, know it is updating again without errors!

(from linuxcnc-2.7-wheezy.iso it was installed in january 2019 - the sources.list has been created automatically and until march 2019 it worked a lot of times without this errors)