PsychoPy v2021.1 local debug mode not working

Online experiments
1

I create a brand new experiment, click on the ‘Compile to JS script’ button, Send experiment to Runner, and click ‘Run PsychoJS task in local debug mode’.

The browser then displays: “initialising the experiment…” and the developer console lists errors such as the following:

Loading module from “http://localhost:12002/lib/core-2021.1.1.js” was blocked because of a disallowed MIME type (“text/html”).
Loading failed for the module with source “http://localhost:12002/lib/core-2021.1.1.js”.

The Runner created a new lib directory for the experiment, but the filenames in it don’t match the ones in the error messages (eg, core-2021.1.js vs core-2021.1.1.js), and all files in this directory contain this:

<head><title>404 Not Found</title></head>
<body bgcolor="white">
<center><h1>404 Not Found</h1></center>
<hr><center>nginx</center>
</body>
</html>

This appears to be due to a bug in PsychoPy v2021.1, that can be fixed by editing the following PsychoPy code file: [python-package-directory]/psychopy/app/runner/runner.py:

@@ -703,7 +703,7 @@
         Useful for debugging, amending scripts.
         """
         libPath = str(self.currentFile.parent / self.outputPath / 'lib')
-        ver = '.'.join(self.app.version.split('.')[:2])
+        ver = '.'.join(self.app.version.split('.')[:3])
         psychoJSLibs = ['core', 'data', 'util', 'visual', 'sound']
 
         os.path.exists(libPath) or os.makedirs(libPath)

After making the patch, restarting PsychoPy, and removing any existing lib directory, local debug mode now works fine.

2 Likes
2

Nice fix, you could always make a PR for that fix on Github. See also Developers docs.

3

I’m in PsychoPy v2021.2 and local debug mode is not working for me. I’m getting exactly the same error message. So would be good to get some help!

Loading module from “http://localhost:12002/lib/psychojs-2021.2.0.js” was blocked because of a disallowed MIME type (“text/html”).
Loading failed for the module with source “http://localhost:12002/lib/psychojs-2021.2.0.js”.

  • I have checked the runner.py file, and it looks like the above patch has already been made in this version of PsychoPy, so I’m stumped.

Thanks in advance,
Jonathan

4

Hi @jonathan.david, thanks for flagging, we are hoping to have this fixed in the coming bugfix release, x

1 Like
5

Hi @jonathan.david, OK this should be fixed in the 2021.2.2 release, thanks again for your patience, x

2 Likes