Issue connecting vCenter to Commvault

Hello,

I have a fresh installation of Commvault version 11.28.56. I am attempting to connect to our vCenter instance through the Command Center GUI. After putting in the information to ‘Add Hypervisor’ I receive a ‘Request body is empty or format is invalid.’ error. Clicking equivalent API shows the following:

{
  "vcenterHostName": "172.16.123.10",
  "name": "vCenter",
  "accessNodes": [
    {
      "id": 2,
      "name": "n1-prod-commvlt"
    }
  ],
  "userName": "vsphere.local\\administrator",
  "password": "cGFzc3dvcmQ=",
  "hypervisorType": "VMware",
  "skipCredentialValidation": false
}

Attached is the error. I have tried vsphere.local\administrator, administrator@vsphere.local, and a Windows AD account. I ensured the ‘VSA’ software was installed on the access node. Any help is appreciated!