External property inconsistently not displaying

[mrxbox98]

In the /resources endpoint the external property representing an external download link randomly doesn't appear.
Example:

[InventivetalentDev]

can you please check the response headers and look for x-spiget-server?

[mrxbox98]

can you please check the response headers and look for x-spiget-server?

Yep, I tried it a view times and all the times the external property was missing the spiget server was avocado