Could not locate libmp3lame.dylib; tried to install from brew, didn't work
When I tried to export mp3 from a score, Musescore says that it couldn't locate libmp3lame.dylib, and ask me to locate the file. I selected the dylib in "Application/Musescore 3 Beta/Contents/Resources/Frameworks", as the app suggested, but Musescore wasn't able to open it.
I couldn't find infos in the the manual to Musescore 3. However, the one to Musescore 2 mentioned that it might be that the libmp3lame.dylib is 32-bit, while my system is 64-bit. It also says that brew users can just install from brew.
So I installed lame from brew, it didn't work; I also tried to copy the dylib installed by brew, and put it in the directory Musescore initially suggested, but it didn't work, either.
Now I am clueless. How do I fix this problem?
Version: 3.5.0 beta
OS: Mac 10.15.4