Embedded giving 404 errors for missing source map ...

matoso · ‎03-11-2019

Hello,

I'm using the powerbi-client to embed reports in a web application and some of the JS files loaded by the embed iframe declare they have a corresponding source map file, but the file is not found and the browser logs a 404 error.

These are the JS files and their missing source maps:

JS file (200 OK):
https://app.powerbi.com/13.0.8621.157/scripts/ai.0.js

Source map declaration:
Line 2392: //# sourceMappingURL=ai.0.js.map

Map file (404 Error):

https://app.powerbi.com/13.0.8621.157/scripts/ai.0.js.map

JS file (200 OK):

https://app.powerbi.com/13.0.8621.157/scripts/powerbiportal.dependencies.externals.bundle.min.js

Source map declaration:
Line 35307: //# sourceMappingURL=interact.min.js.map

Source map file (404 Error)

https://app.powerbi.com/13.0.8621.157/scripts/interact.min.js.map

It's possible to add those map files, or remove the source map declarations?

v-jiascu-msft · ‎03-12-2019

Hi @matoso,

That seems a fake message only in Firefox. Firstly, the files are loaded. Please refer to the snapshot below. Secondly, no such error message in Chrome.

Embedded giving 404 errors for missing source map files.png

Do you have any issues in the embedded reports?

Best Regards,

Dale

v-jiascu-msft · ‎03-12-2019

matoso · ‎03-12-2019

Hi, Dale. Thanks for the response.

I forgot to mention the problem only occurs in Safari browser (v 12.0.3). The JS files are loaded, but it fails to load corresponding .map files.

It doesn't affect the report rendering.

Thanks,

v-jiascu-msft · ‎03-12-2019

Hi @matoso,

After digging into the .map file related contents, I found it's a developer tool. It won't harm anything. I also found an example. Please refer to the snapshot below and the links below.

https://blog.teamtreehouse.com/introduction-source-maps

https://stackoverflow.com/questions/21719562/javascript-map-files-javascript-source-maps

https://stackoverflow.com/questions/27196117/why-using-jquery-map/27196201#27196201