PKHeX deals with console decrypted saves.
Use JKSV or Checkpoint to get such a save...
Additionally, Emerald save in that folder and format would suggest you're playing a fake VC inject GBA game.
Not sure if those kind of games can have their save extracted. All you can do is try.
I also tried a save from VisualBoyAdvance but it still didn't work. In fact I've tried multiple saves from MyBoy (Android emulator) and No$GBA but all attempts were unsuccessful
Lately I've been trying to import my Pokemon Emerald save file to PKHeX but this error screen keeps popping up. I've tried with different saves but it doesn't work.
Error 404: save file not found
in Saves - Editing Help
Posted
I also tried a save from VisualBoyAdvance but it still didn't work. In fact I've tried multiple saves from MyBoy (Android emulator) and No$GBA but all attempts were unsuccessful