The refered tutorial. The commands used in order:
1)wget https://desktop-download.mendeley.com/download/apt/pool/main/m/mendeleydesktop/mendeleydesktop_1.19.4-stable_amd64.deb
2)sudo dpkg -i /mendeleydesktop_1.19.4-stable_amd64.deb
3sudo apt -f install
It fails as soon as I input my password as required in the second step. This is what the terminal shows me:
dpkg: error: cannot access archive '/mendeleydesktop_1.19.4-stable_amd64.deb': No such file or directory
Also, in the Mendeley website the current versions of the software seem to be incompatible with 20.4.
wget) the file and save it in your $PWD (present working directory; ie. relative), then your second command tells it to install it from the defined path (in the root directory, not relative/$PWD) so your second command doesn't match your first UNLESS you were in '/' to begin with, where I'd expect the first command to fail assudowasn't used. Your commands imply you didn't understand them, as they contradict (at least as provided). If you didn't get an error as the first command, you're second needs to reflect the $PWD/save location of the first command – guiverc Nov 18 '20 at 11:06/mendeleydesktop_1.19.4-stable_amd64.deb(starting with /, thus saving in root). Try using sudo for the first command also. – Artur Meinild Nov 18 '20 at 11:10