Failure locating elements is a common testing challenge in Test Studio. You can find some of our most common troubleshooting approaches here. We will need some additional information to properly isolate your issue. The trace log you provided contains limited information related to your test, so if possible please provide a copy of the failed test log, the complete test log, and a snapshot of the DOM tree. You can export these documents using the Export Result to File icon in the Step Failure Details dialog.
Thanks for providing us with the information we need to help resolve your issue.
All the best,
the Telerik team