Thank you for your response. The error message occurs on core.js(121,20). I put the screenshot and the cursor shows the position 20 below.
Disabling MINIFICATION_ENABLED worked. I can not see the error on the console any more. But did that has an effect for the web app in production mode? I am using Tapestry 5.6.1. Thank you and regards, H.Sahin Am 27.10.2020 um 10:08 schrieb Ben Weidig: > Hi, > > does the problem occur in production only, or also in dev? > > We had some issues with Google Closure Compiler and IE11 in the past, > optimizing "too much". > > You could try to disable minification to narrow the problem > down: org.apache.tapestry5.SymbolConstants.MINIFICATION_ENABLED > > Or you can check the core.js file received in the browser, too see the > actual JS that IE11 doesn't like. > > I couldn't recreate your error, even though we're running 5.6.0. But > there weren't changes to coffee files in 5.6.1 as far as I know. > > Ben
