NSX/Vcenter Cloud Down After Upgrade to 30.2.3 – Error: "invalid character '<' looking for beginning of value

Products

• VMware Avi Load Balancer

Issue/Introduction

• After the upgrade, the following error is observed on the UI for the cloud:

 

• In the cc_agent.log, the error below is logged:

2025-07-08T00:47:33.535Z        INFO    nsxtlib/nsxt_lib.go:301 [/search?query=resource_type:PolicyTransportZone] npages:0, nrecords: -1, error: invalid character '<' looking for beginning of value

Cause

The Cloud Connector attempts to query both NSX and vCenter using connections with and without the proxy. It then locally persists whichever response it receives first. Due to a race condition, the Cloud Connector mistakenly treated a 403 Forbidden response from the proxy as valid and began using the proxy path for connectivity to both NSX and vCenter

Resolution

Temporary Workaround:

Either disable the proxy or ensure that both vCenter and NSX-T are allowed through the proxy

To disable the proxy configuration on the Avi Controller, follow these steps:

[admin:]: > configure systemconfiguration
[admin]: systemconfiguration> no proxy_configuration
[admin]: systemconfiguration> save

 

Permanent Fix:

A permanent fix for this behavior is scheduled to be included in version 30.2.5.