My Mac displays the following message on the screen every now and then.
I am using Mac OS 10.15.4
Legacy System Extension
Existing software on your system loaded a system extension signed by “Avira Operations GmbH & Co. KG” which will be incompatible with a future version of macOS. Contact the developer for support.
It also directs to the following URL: https://support.apple.com/en-gb/HT210999
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