Horizon HTML5 admin UI does not list snapshots for provisioning operation

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:
Debug logs of connection server shows log entries similar to:

[RestApiServlet] Unexpected fault:(vdi.fault.UnexpectedFault) {    errorMessage = Encountered unexpected error during execution,    causeString = java.lang.StringIndexOutOfBoundsException: begin -2, end 0, length 0

Environment

VMware vSphere ESXi 7.0.x

Cause

This issue occurs when the vCenter SDK API does not return the correct hardware version. This causes an runtime exception in Horizon View API which blocks listing of snapshots from Horizon admin UI.

Resolution

This is a known issue in ESXi 7.0.1.

Workaround:
Update to 7.0 u2 or higher.