Unable to uninstall SQL Server Integration Services Projects Extension

I installed SQL server, then SSDT from VS installer and after that the SSIS Extension v3.0 for VS Community 2019. But now that I try to uninstall it I get the following error:

Some components will not be uninstalled because removing them would place this computer in an unsupported state. Please manually remove them in Control Panel.

After that I get the following message:

The configuration registry database is corrupt (0x800703F1)

Try known issue #6 here at Visual Studio Marketplace:

Cannot be uninstalled from Control Panel.  Here is a work around:

• Open extension.vsixmanifest under <VSInstanceRootDir>\Common7\IDE\CommonExtensions\Microsoft\SSIS,

• Change the value of attribute InstalledByMsi at line 10 from "true" to "false",

• Save extension.vsixmanifest,

and then you can uninstall this product from Control Panel.