I am us Premium Yoast plugin, json error

I activate the plugin and when click on my website logo, all the contents of current page hide and when I deactivate plugin, the website work perfect.
I found error message:
SyntaxError: missing ; before statement
{“@context”:”http:\/\/schema.org”,”@type”:”WebSite”,”url”:”http:\/\/con

I try and add filter in funstions.php but it not work
add_filter( ‘wpseo_json_ld_output’, ‘__return_false’ );

I also try ‘/true’ after http://schema.org
“@context”: “http://schema.org/true”,

but not work

How I can fix this error.

https://wordpress.org/plugins/wordpress-seo/