Uncaught SecurityError

[SpiderJon]

I started the content server in Calibre (I'm using ver. 7.1), but my Kobo Clara HD browser won't load anything from it, and when I browse to it locally (ie, http://127.0.0.1:8080/ ) I end up getting the following error, in both of the browsers I use (Chrome & Brave -- both of which are, of course, based on the Chromium codebase, so maybe no surprise they give the same error).

Error: Unhandled error

Uncaught SecurityError: Failed to read a named property 'CanvasRenderingContext2D' from 'Window': Blocked a frame with origin "http://127.0.0.1:8080" from accessing a cross-origin frame.
Error at inject.js:70:22

Traceback (most recent call last):
at chrome-extension://lanfdkkpgfjfdikkncbnojekcppdebfp/data/content_script/page_context/inject.js:70:22
Error: Failed to read a named property 'CanvasRenderingContext2D' from 'Window': Blocked a frame with origin "http://127.0.0.1:8080" from accessing a cross-origin frame.

I'm not too worried about the "security" aspect, since it's all local and firewalled, but it's stopping me getting at Calibre content from my Kobo. (Yes, I can use a USB cable, but that's more fuss.)

Thanks.

[theducks]

Localhost (AKA 127.0.0.1) was used for nasty purposes.
Use the PC's IP (if you hover over the Sharing icon, it should tell you what to use)

[Comfy.n]

Originally Posted by SpiderJon

I started the content server in Calibre (I'm using ver. 7.1), but my Kobo Clara HD browser won't load anything from it, and when I browse to it locally (ie, http://127.0.0.1:8080/ ) I end up getting the following error, in both of the browsers I use (Chrome & Brave -- both of which are, of course, based on the Chromium codebase, so maybe no surprise they give the same error).

Error: Unhandled error

Uncaught SecurityError: Failed to read a named property 'CanvasRenderingContext2D' from 'Window': Blocked a frame with origin "http://127.0.0.1:8080" from accessing a cross-origin frame.
Error at inject.js:70:22

Traceback (most recent call last):
at chrome-extension://lanfdkkpgfjfdikkncbnojekcppdebfp/data/content_script/page_context/inject.js:70:22
Error: Failed to read a named property 'CanvasRenderingContext2D' from 'Window': Blocked a frame with origin "http://127.0.0.1:8080" from accessing a cross-origin frame.

I'm not too worried about the "security" aspect, since it's all local and firewalled, but it's stopping me getting at Calibre content from my Kobo. (Yes, I can use a USB cable, but that's more fuss.)

Thanks.

That's the id for an add-on "Canvas Fingerprint Defender". I'd try disabling it and see if that works