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I am using 18.04 version. i wanted to install game war zone 2100 so i installed its dependencies and after that i am getting this error. i cannot update the software center is not opening . the synaptic package manager is also not opening. On the status bar the red minus icon appears as a error. i even cant upgrade. the apt update gives me this error.

Reading package lists... Done                                                 
E: Failed to fetch http://ppa.launchpad.net/webupd8team/popcorntime/ubuntu/dists/trusty/InRelease  403  Forbidden [IP: 91.189.95.83 80]
E: The repository 'http://ppa.launchpad.net/webupd8team/popcorntime/ubuntu trusty InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The value 'xenial' is invalid for APT::Default-Release as such a release is not available in the sources
muru
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eYe
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1 Answers1

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acctually i just pasted the dependencies list to download and install . after the error i realised that the source was for 14.04 xenial . so now i regret for my that move.i was installing the game warzone 2100 3.3.0.

eYe
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