[Rehan]

Error No. #1

Try this:

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apt-get install build-essential

After that try to start the game server application again.

I have install this but still server is showing same error.I have read the instructions you gave me but tried only the first one.Currently due to some electricity problem i shall try remaining after a couple of hours. Replying you now to inform about what i tried.
I am sorry for posting less information as i always.


EDIT
This is the data in /etc/apt/source.list.

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deb http://ftp.debian.org/debian jessie main contrib non-free
deb http://ftp.debian.org/debian jessie-updates main contrib non-free
deb http://security.debian.org jessie/updates main contrib non-free

update problem has been solved with the method you gave.But still have those problems in plugins load.I replaced source.list data with the following

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deb http://deb.debian.org/debian/ oldstable main contrib non-free
deb-src http://deb.debian.org/debian/ oldstable main contrib non-free

deb http://deb.debian.org/debian-security oldstable/updates main
deb-src http://deb.debian.org/debian-security oldstable/updates main