cannot preview page in page designer

Summary:

We are using VB Studio provisioned with Fusion SaaS on test pod.

We created two environments -

#1 to connect to Fusion test pod

#2 to connect Fusion dev pod

I created workspace#1 which uses #1, I can preview the page in page designer for main-start ui.

I also created workspace#2 which uses#2 (dev pod env), I cannot preview the page in page designer for main-start ui. The following is the error I got.

Any advice to fix this issue for workspace#2 which connects Fusion dev pod?

Content (required):

Version (include the version you are using, if applicable):

Fusion:

22C

Vision Studio: