When you go to the SD Cloud UI>Then select SRX tab> IPsec VPN> After clicking the VPN rules , it keeps in a loading loop. 

This occurs because the associated device could have been deleted at some point, but the IPSEC VPN remained in the SD Cloud database, the following symptoms can be seeing: 

1. In the browser inspection tools, we can see it fails with an internal server error(500). 
2. GUI keeps in a loop loading. 

Solution:

1. To delete an IPsec VPN · Select SRX > IPsec VPN:
   1. Please delete an IPsec VPN | SD Cloud
   2. Reimport the device configuration.
2. If the problem persists, please contact JTAC support.