Sitelinks Search Box JSON-LD giving error on Google Structured Data Testing Tool

Question

I implemented Google’s Sitelinks Search Box to my site. It was working very well. But today I cheked again on Google Structured Data Testing Tool and something was wrong. Now I’

Answer 1

I noticed that even the examples on the online documentation receive the same exact error you received. When I changed

"@context": "http://schema.org"

to

"@context": "http://schema.org/true"

the error disappeared. Hope this helps.