UnicodeEncodeError: ‘…’ codec can’t encode …

Where <encoding> might be ascii, cp932, charmap or anything else other than utf-8. This error usually shows up when you try to print something and has very little to do with Hydrogram itself as it is strictly related to your own terminal. To fix it, either find a way to change the encoding settings of your terminal to UTF-8 or switch to another terminal altogether.