OOTB Console errors in 6.5 Upgraded Page

[akhilraj]

Hi Team,

We are getting below errors in few of our pages but pages are functioning properly. This errors are coming for 6.5 upgraded instances only in few pages. rest of the pages are looking neat in console.

As it is OOTB errors, not sure what to do.

[Ritesh_Mittal]

Hi @akhilraj ,

Looks like babel-polyfill has been included multiple times (third party libraries?), can you check your web-config. Just check below thread-

https://lifesaver.codes/answer/babel-polyfill-error-error-only-one-instance-of-babel-polyfill-is-all... 

[DEBAL_DAS · Accepted solution]

It might be clientlib dependency is causing this issue.

We can refer below steps to troubleshoot the issue -

1. As you are facing the said issue with few pages, were those page created with same template?

   if yes, then please check page rendering component via sling:resourceType property at jcr:content node  

   of page.

   Check what are the clientlibaries are getting used , dependency client libraries like below one -

and compare with dependency client libraries associated with pages where you aren't seeing this issue.

2. Regarding babel-polyfill  issue please refer below links -

https://stackoverflow.com/questions/53287691/uncaught-error-only-one-instance-of-babel-polyfill-is-a...

https://github.com/babel/babel-loader/issues/401

https://stackoverflow.com/questions/43902416/only-one-instance-of-babel-polyfill-is-allowed-error

[akhilraj]

The inclusion of coralui3 fixed the issue. Thank you all