esp32 E.openFile stops working after multiple fs.readFile and fs.writeFile

I could take another screen shot of this happening using the upload button instead of copy and paste, but this snippet is really just an example of the problem happening in a much, much larger set of modules that I upload to the board.

I was able to narrow down the problem to this section of my code, then made the most base-case example of the problem occurring (as shown in the screenshot) then I ensured it was the problem by running it via:

1. the IDE console,
   
2. the Upload button via the right side of the IDE,
   
3. using the Espruino js api tool (which is mainly what I use so I can use es6 and my own watch/compile/upload-only-changes-modules command line tool).
   
   

This issue happens in all three cases.

Thank you for the quick reply btw!