HTML5: access control check ???

[giansuana]

I followed this LiveCode tutorial but ended up with this error in the JavaScript console of Firefox:

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[Error] XMLHttpRequest cannot load file:///Users/grt/Downloads/Escape/test/standalone-9.6.9.html.mem due to access control checks.
	(anonyme Funktion) (index.html:240)
	Globaler Code (index.html:241)

I have no idea what to do...
Best regards.

[giansuana]

I finally found a solution: Problem is that my computer with macOS 13.3.1 does not allow starting web apps directly from a folder on my hard drive; even not by Firefox - in contrary to the tutorial. I have to start a webserver, first.
One simple method to have a webserver for testing purposes is to invoke python 3 and starting a webserver within the folder with the web app:

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python -m http.server 8000

After that I enter the URL http://localhost:8000 into the browser of my choice and see the folder content as clickable file list. Now, the web app is running fine.