Error while provisioning a vm in RegisterVM_Task for vsphere 6.5 using vim jar

<soapenv:Envelope xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
soapenv:Body
soapenv:FaultServerFaultCode
Required parameter path is missing

while parsing call information for method RegisterVM_Task
at line 1, column 88

while parsing SOAP body
at line 1, column 82

while parsing SOAP envelope
at line 1, column 22

while parsing HTTP request for method registerVm
on object of type vim.Folder
at line 1, column 0</soapenv:Fault>
</soapenv:Body>