How can i fix this Issue?

[t296102030b]

what I remember is I changed the settings in other software :

[Ocka]

If you don't use " Source code packs", please "Uncheck" all "Source" packages.

Sometimes you may need to wait & try again ( updating)
Or if it continues, please try a server near you in ( "Software & Updates" )

[Aravisian]

Many of the warnings are for "configured multiple times"

This means that you have added the same repository several times.
You need to clean out the extras.
Without a closer look, I cannot be sure if your duplicate repositories are in
/etc/apt/sources.list
or if you have others in
/etc/apt/sources.list.d (The .d shows that it is a Directory).

You can elevate to Root

sudo -i

nautilus

Then navigate to the above directories or do all in terminal, whichever you find most comfortable.

[337harvey]

If you have stacer installed you can also handle the sources by the source list tab.

[t296102030b]

thanks... it helped much,,, but still a lil issues,, lol

[t296102030b]

now done. figured it out. hope I did it the right way. thanks to you guys.