Panorama OTP verification failed due to the error "Generic communication error occured. Please enable debugging for detailed info [get-panorama-cert.py:262] <class 'TypeError'> ("'error' object is not iterable",)"

Panorama OTP verification failed due to the following error.

admin@Panorama> request plugins cloud_services panorama-certificate fetch debug yes otp <OTP>

Generic communication error occured. Please enable debugging for detailed info  [get-panorama-cert.py:262] <class 'TypeError'> ("'error' object is not iterable",) 
=========== DEBUG BEGINS ===========

=========== DEBUG ENDS ===========
Failure

• Panorama Managed Prisma Access
• Panorama
• Cloud Services Plugin

This issue can be caused by several reasons, including:

1. Required ports and FQDNs are not allowed by security appliances on the path between Panorama and Prisma Access.
2. PMTUD is not working correctly on Panorama due to the following factors.
   1. Customer environment uses Palo Alto Networks firewalls as security appliances with SYN cookies enabled in Flood Protection.
   2. ICMP fragmentation needed message not to reach the management interface because permitted IP list is configured on management interface of Panorama.

1. Allow required ports and FQDNs in security appliances.
2. 
   
   1. Disable SYN cookies on the firewall
   2. Add the IP of the intermediate devices that sent ICMP Fragmentation needed message to permitted IP list.

• Set Up Prisma Access (Panorama)
• Firewall not connecting to Panorama | Intermediate device sends ICMP Fragmentation needed message
• Allowing Specific IP Addresses to Access the Palo Alto Network Device
• PAN-OS Web Interface Help: Network > Network Profiles > Zone Protection > Flood Protection