Hi Sume,
Unfortunately i’ve never needed to troubleshoot this library, it’s always just worked for me, on a clean install I usually do the following:
pip3 install -U robotframework
pip3 install -U robotframework-seleniumlibrary
pip3 install -U webdrivermanager
webdrivermanager <browsername>
Basically just follow the installation instructions
if you’ve done that, then and it’s still not working then log an issue with the developers
Sorry I can’t help more than that,
Dave.