its looks loks like that this avrdude is 32 Bit executable. right?
file ./avrdude
./avrdude: Mach-O universal binary with 2 architectures: [i386:Mach-O executable i386] [ppc:Mach-O executable ppc]
./avrdude (for architecture i386): Mach-O executable i386
./avrdude (for architecture ppc): Mach-O executable ppc
macOS Catalina (10.15) dropped support for 32-bit executables 🙁
https://support.apple.com/en-us/HT208436
is there any workaround. i guess i`m not the only user which runs MacOS in that version.