VcPlugin.getAllVirtualMachines(null, "xpath:name='" + vmName + "'") jxpath expression {} does not evaluate to boolean after upgrading vSphere plugin to 6.5.0.4658893

VcPlugin.getAllVirtualMachines(null, "xpath:name='" + vmName + "'")

generating this error jxpath expression {} does not evaluate to boolean

after upgrading vSphere plugin to 6.5.0.4658893

Worked with the version that shipped with the 7.2 appliance but this newer plugin is listed on the appliance download page... Can someone confirm this bug and make a tech preview with a fix available or let me know what I might need to modify in my code?  I'm off to scour the docs to see if the syntax has changed.

Thanks!