I uninstalled Qt5.14.2 from /opt and reinstalled in /home/df/Applications/Qt according to the tutorial of the official Qt channel.
Then I removed all the contents of the /home/df/otter-browser-master/build directory
I did not remove the directory, only its contents.
Then I changed the end of the command you showed me.
It looks like this:
cmake -DCMAKE_PREFIX_PATH=/home/df/Applications/Qt
I am still getting the same error.
