/deep/ combinator is deprecated warnings on chrome.After unable to use the portal in google chrome.

Dear experts,

We are accessing the portal in google chrome.It's unfortunately stopped the working and after it Is showing following warning in google chrome console.we are not getting any log trace for the same.

/deep/ combinator is deprecated. See

https://www.chromestatus.com/features/6750456638341120 for more details.

The above error we checking in net we are not able to get any solution.

find the below for reference.

Issue 498405 - chromium - ::shadow or /deep/ combinator is deprecated warnings on chrome:// pages - An open-source pr…

We are unable fix this error.Please suggest how to resolve this error. Because the end users are facing this error and are unable to use the portal in google chrome.

Please provide the solution for the same ASAP.

Thanks and regrades,

Durga Rao.