{network} When execute 'az network express-route gateway create--'command, CLI shows InternalServerError

[YuanyuanNi]

az feedback auto-generates most of the information requested below, as of CLI version 2.0.62

Describe the bug

When execute 'az network express-route gateway create -n mygateway0001 -g nyy 'command, CLI shows InternalServerError
To Reproduce

execute 'az network express-route gateway create -n mygateway0001 -g nyy'
Expected behavior

a express-route gateway should be created
Environment summary

azure-cli 2.30.0 *

core 2.30.0 *
telemetry 1.0.6

Extensions:
application-insights 0.1.14
front-door 1.0.16
virtual-wan 0.2.11

Additional context

[jiasli]

Thank you for reporting this issue. We will take a look.

[microsoft-github-policy-service]

🔔 Routing this issue to @act-quality-productivity-squad.