ERROR: Required field missing (_forward_card_height_)

[nura]

I am getting some error like
ERROR: Required field missing (forward_card_height)
while testing my website in card validator.
All applicable meta tags for summary card are available in my website with valid content as follows.

meta name="twitter:site" content="@SEEiT"
meta name="twitter:card" content="seeit"
meta name="twitter:seeit:showid" content="6212149557109641112"
meta name="twitter:seeit:idspace" content="s"
meta name="twitter:title" content="Chicago P.D."
meta name="twitter:description" content="some description around 120 characters or more"
meta name="twitter:image" content="https://proxy.see.it/myriad/select/image?entityId=5236203115116490112&width=400&height=300"
meta name="fragment" content="!"

could you some guidance about the above error.

[andypiper]

twitter:seeit:showid

This is not a documented card tag. The card type “seeit” does not exist in the list of Card types.

We’d need a URL to help to debug any further, but you should try using one of the supported Card types.

[nura]

@andypiper Thank you Andy, its working once card type is changed.

[andypiper]