If you play on PC, please go to the "%APPDATA%\Godot\app_userdata\Sprout Valley" and grab your save file there, should be named like save_state.sav. If you could email me to v.lyahovic.g@gmail.com so I can debug, would be great!
I can also advice you, maybe it will help, to try to dig what's behind it, maybe it will help. Curious how you even could dig that tile behind the arcade machine...
