Internal server error on twitter card validator


My website posts to twitter but I want to post the large image with summary tweet, not just the link. When I go through my Yoast SEO plugin and try the twitter card validator I get internal server error.
Here is a sample post:

I checked with my server and got this response:

I’ve cross-verified the issue and was able to replicate the same. However, the back-end permission and configuration is fine for the website. There was a recent report on the the same issue at Twitter cards not working. Validator returns ‘Internal Server Error’ . However, there isn’t any solutions provided for that. You can refer: which says that issue is with Twitter’s Validator itself. Please contact the twitter support regarding this and seek their assistance.


Can I get some help with this issue? Does Twitter not have any staff?