DO IT on this block to see if it return empty string.
sorry I still don't understand, can you explain in more detail?
are you sure you get the correct base64 string ?
I previously used that extension in Kodular, is it different in App Inventor?
You need to connect the ai2companion first.
oh okay
DO IT on this one
Now you know the reason
does that mean i am using the wrong extension?
Try removing the file:// prefix using the replacement block.
does that mean the extension is not used?
No, you feed that into the extension block. If you had read the tooltip / documentation, the base64 extension is expecting an absolute path, not a full path.
You can read more about that here:
