Recently, I get this postMessage couldn't be cloned error. It is happening on most of the latest browsers like Chrome 68, Firefox 61.0, IE11, Edge.
Failed to execute 'postMessage' on 'Window':
function (a){if(qe.$a.hasOwnProperty(a))return qe.$a[a]}
could not be cloned.
The stack trace is:
Error: Failed to execute 'postMessage' on 'Window':
function (a){if(qe.$a.hasOwnProperty(a))return qe.$a[a]}
could not be cloned.
at _reportEvent (eval at (:1:35637), :94:35)
at eval (eval at (:1:35637), :55:5)
at eval (eval at (:1:35637), :433:11)
Searching through the source of my page in DevTools shows gtm.js
as the source of the code fragment:
I have a Google Tag Manager tracking code on my page. Why is this happening?