Accidentally Exported Game Incorrectly

So I recently wanted to test what an exported game in RPG Maker MV would look like. I then created a folder for the game to be put into but it seems like the exported game took over the project folder. This wouldn't be a problem, but whenever I click the play test button, it loads the exported game, not the working build. The working build loads fine if I use the index.html file, but that is just awkward. If I remove every file that is unique to an exported game but when that happens I get this screen:
does anybody know how to fix this, or do I have to use the Index.html file to test the game from now on?

Thanks
~Spak

Edit:
I just realized that maybe the battle test function wouldn't work as well so I tested that, and sure enough, this screen is what was shown:

I apologize for the double post, but the image I attached to my edit doesn't seem to have worked so I have to post it here. Sorry!

hi actually exporting a project under rmmv are to create a copy of the project source and just replace the nwjs sdk !
correct me if I'm wrong!

you give too little information to help you.
if you use plugins, the problem can come from millions of line of code ..
if you want to export a project with plugins that modifies the base source code of rmmv, you will need provide or explain the source code.

note: chrome have secure local profile if you try run from web.
Try use firefox or edge.
For chrome web you need hack your profile setup.
chrome allow you only run project on server.

@Jonforum that is not his problem - he has overwritten the packages.json by exporting to the wrong folder and now can't playtest.

@SpakTheComposer
1) make a copy of your current project folder (just in case something goes wrong)
2) in the copy, delete the www folder
3) make a new project elsewhere
4) copy the packages.json file from the new project into the backup where you deleted the www folder, overwriting the file that is there.
5) open RMMV, go to the menu to open a project, then navigate to the modified backup and open that project.

if that now works as intended, reorganize your folders to be where you want them and then continue working.

Thank you so much this completely fixed the issue!