Before upgrading our VxRail cluster from 4.7 to 7.0, I am first upgrading the external vCenter to 7.0.2. During pre-upgrade check, I received warning messges as below:

This vCenter Server has extensions registered that cannot be upgraded to or may not work with the new vCenter Server. Extensions: VxRail HTML5 client Plugin (by DellEMC) on https:// /download/vxrail-plugin . 

Anybody had similar experience? Is it safe to continue or is there a fix? Thanks.