I have access as admin permissions to the esxi web portal not the whole server. I would be glad and also it will be helpful for me to finish it off more better way than what I'm doing.
In the Esxi web interface I do not see any options other than export and when I click on the export all I see is exporting the vm but its just an event without any output , I mean I dont see any download happening into my system.
Please help me with some documentation if you have some. I have worked on vmware very long time back so I need some help sir.
Did you try to export with vSphere Client / Web Client? Is there same problem?
Did you check to unmount any attached device, like ISO files from VM?
This is because of mismatch between ESXi version (6.7) and vSphere Client (6.0 probably). You can do it just with vSphere Web Client (HTML5 interface is used in ESXi 6.7).
But about your first issue, try to connect to your source with following pattern:
ovftool -dm=thin "vi://Your_ESXi_Host/VM_Name" OVF_File.ovf
Also try with .ova extension and also with ESXi:443 combination