Use Do it to debug your blocks
According to the error message you are trying to access the root directory of the internal emulated sdcard and not the ASD
Show us some more relevant blocks...
Use the companion app and Do it to debug your blocks, see also tip 4 here App Inventor: How to Learn | Pura Vida Apps
see also Live Development, Testing, and Debugging Tools
Taifun
Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by
Taifun.
