Google tag manager preview mode debug pane not working on modern pages
Hello everyone! I tried to add the code for the Google Tag Manager in the browser's console while I was on a modern page, but unfortunately when I'm in the tag manager's preview mode, the debug pane does not open and this error pops up in the console: goog.asserts.AssertionError { message: "Failure: Bad value `d8aec69a-5e9c-4c7a-ae18-1f0ba39af3bc` for |filterCspNonceValue", stack: "AssertionError: Failure: Bad value `d8aec69a-5e9c-4c7a-ae18-1f0ba39af3bc` for |filterCspNonceValue at new goog.asserts.AssertionError (https://tagmanager.google.com/debug:46:1056) at Object.goog.asserts.fail (https://tagmanager.google.com/debug:49:89) at Object.soy.esc.$$filterCspNonceValueHelper (https://tagmanager.google.com/debug:738:137) at Object.soy.$$filterCspNonceValue (https://tagmanager.google.com/debug:706:443) at Object.gtm.debugui.soy.frame.renderContent (https://tagmanager.google.com/debug:748:488) at Object.gtm.debugui.frame.createInlineFrame_ (https://tagmanager.google.com/debug:756:404) at Object.gtm.debugui.frame.init (https://tagmanager.google.com/debug:761:237) at https://tagmanager.google.com/debug:761:385 at https://tagmanager.google.com/debug:762:3" Adding the same script from google tag manager in a classic experience page and opening the debug pane works fine, without the assertion error occurring. I also tried to use the SPFx extension (that seems to do pretty much the same thing) from this repository: https://gitlab.lsonline.fr/SharePoint/sp-dev-fx-webparts/gtm but the same issue occurs. I am using SharePoint 2019 but this error pops up in SharePoint online too.