Crash update manager

Zorin OS9 crash update manager

Try to install Bitdefender anti virus software
After adding the software location to the source list I got this report.
Update manager and Software Centre does not work anymore.

How can I repair this?
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E: Malformed line 56 in source list /etc/apt/sources.list (dist parse)
E: The list of source could not be read
E: Package list or status file could not be parsed or opened
E: _cache->open() failed, please report.

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Regards Remy

For starters, remove the source you added and then uninstall BitDefender by opening a terminal (Ctrl+ Alt+ T) and enter:

Code:

sudo apt-get remove bitdefender

Keep us posted!