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I can't install bitdefender wallet extension.

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I'm trying to install the bitdefender wallet extension with drag and drop in the extension panel. I get the followin error: Supplement could not be installed because it appears to be corrupt.

I'm trying to install the bitdefender wallet extension with drag and drop in the extension panel. I get the followin error: Supplement could not be installed because it appears to be corrupt.

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This means that the extension is signed with a certificate and has been modified and that the signature is no longer valid.

Signed extensions have a META-INF folder that contains a manifest and a certificate.