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When I downloaded discord-0.0.14.deb, I remove 0.0.13 and install 0.0.14, and this message

unable to install discord: error while installing package: installed gconf2-common package post-installation script subprocess returned error exit status 1

shows up. So, I thought something must wrong and tried to uninstall it but got this message after uninstalling the process

E: Sub-process /usr/bin/dpkg returned an error code (1)

shows up.

Then, I search for the problem and found this page How to Fix sub-process /usr/bin/dpkg returned an error code (1) in Ubuntu

then, I typed this command :

sudo dpkg ––configure –a

And I got this error

dpkg: error: need an action option

How do I fix it? sorry for the grammar.

Denial Grey
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    Also, please post more of the output. The actual error was earlier than the one you posted. The error lines typically begin with E: – mchid Apr 12 '21 at 16:24
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    The last error is because you probably copied and pasted the command from an improperly formatted website so instead of regular hyphen dashes like these sudo dpkg --configure -a your command has slightly longer figure-dashes or en-dashes like these sudo dpkg ––configure –a – mchid Apr 12 '21 at 16:30
  • Does this answer your question? How do I restore the default repositories? – N0rbert Apr 12 '21 at 18:28
  • I redownloaded discord(deb version), opened it with Software Install(Ubuntu Software), and installed it with the Software Install. The app is actually installed but in software install, it said "Unable to install discord: Error while installing package: install gcon2-common package post-insatllation script subprocess returned error exit status 1" – Denial Grey Apr 13 '21 at 12:14

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