Dereferencing a URL did not result in a valid JSON-LD object

pyrog commented 3 years ago

All remote documents used display the following error:

jsonld.InvalidUrl: Dereferencing a URL did not result in a valid JSON-LD object. Possible causes are an inaccessible URL perhaps due to a same-origin policy (ensure the server uses CORS if you are using client-side JavaScript), too many redirects, a non-JSON response, or more than one HTTP Link Header was provided for a remote context.

Example : https://mobilizon.chapril.org/events/ed969ea7-5c89-460e-b87b-6411ce747965

All tabs are empty, except the Visualized tab that display the graph. Expanded tab Vusalized tab

Tested with Safari, Chrome and Firefox

pyrog commented 3 years ago

Another example with data past from a webpage: same error message.

{

    "@context"              : "http://schema.org",
    "@type"                 : "FoodEstablishment",

    "image": [

        "https://cdn.website.dish.co/media/62/04/2322328/Au-Cha-LHeureux-couv-cha.jpg"
    ],

    "name"                  : "Au Cha L&#039;Heureux",
    "address"               : {
        "@type": "PostalAddress",
        "streetAddress": "3 Impasse du Miracle",
        "addressLocality": "Chavanod",
        "postalCode": "74650",
        "addressCountry": "FR"
    },
    "email"                 : "",

    "menu"              : "https://cdn.website.dish.co/media/d5/b1/2385750/Au-Cha-LHeureux-menu-cha-lheureux.jpg",

    "priceRange": "",

    "geo"                   : {
        "@context"              : "http://schema.org",
        "@type"                 : "GeoCoordinates",
        "latitude"              : "45.8833524",
        "longitude"             : "6.0622454"
    },
    "url"                   : "https://au-cha-lheureux-restaurant.eatbu.com/",
    "telephone"             : "+33450524233",
    "servesCuisine"         : "Française, Fait maison, Traditionnel",
    "paymentAccepted"       : "Espèces, Paiement sans contact, MasterCard, Ticket Restaurant®, VISA, Carte ticket restaurant, Carte de débit, Apple Pay",

    "openingHoursSpecification" : [

            {
                "@type"     : "OpeningHoursSpecification",
                "dayOfWeek" : "http://schema.org/Monday",
                "opens"     : "12:00",
                "closes"    : "14:00"
            }
            ,

            {
                "@type"     : "OpeningHoursSpecification",
                "dayOfWeek" : "http://schema.org/Tuesday",
                "opens"     : "12:00",
                "closes"    : "14:00"
            }
            ,

            {
                "@type"     : "OpeningHoursSpecification",
                "dayOfWeek" : "http://schema.org/Wednesday",
                "opens"     : "12:00",
                "closes"    : "14:00"
            }
            ,

            {
                "@type"     : "OpeningHoursSpecification",
                "dayOfWeek" : "http://schema.org/Thursday",
                "opens"     : "12:00",
                "closes"    : "14:00"
            }
            ,
            {
                "@type"     : "OpeningHoursSpecification",
                "dayOfWeek" : "http://schema.org/Thursday",
                "opens"     : "18:00",
                "closes"    : "21:00"
            }
            ,

            {
                "@type"     : "OpeningHoursSpecification",
                "dayOfWeek" : "http://schema.org/Friday",
                "opens"     : "12:00",
                "closes"    : "14:00"
            }
            ,
            {
                "@type"     : "OpeningHoursSpecification",
                "dayOfWeek" : "http://schema.org/Friday",
                "opens"     : "18:00",
                "closes"    : "21:00"
            }
            ,

            {
                "@type"     : "OpeningHoursSpecification",
                "dayOfWeek" : "http://schema.org/Saturday",
                "opens"     : "12:00",
                "closes"    : "14:00"
            }
            ,
            {
                "@type"     : "OpeningHoursSpecification",
                "dayOfWeek" : "http://schema.org/Saturday",
                "opens"     : "18:00",
                "closes"    : "21:00"
            }
            ,

            {
                "@type"     : "OpeningHoursSpecification",
                "dayOfWeek" : "http://schema.org/Sunday",
                "opens"     : "00:00",
                "closes"    : "00:00"
            }

    ],
    "specialOpeningHoursSpecification" : [

    ]

    ,"deliveryMethod": [

        "PICKUP",
        "DELIVERY"      ]

}

gkellogg commented 3 years ago

It works with the Ruby distiller: http://rdf.greggkellogg.net/distiller?command=expand&format=jsonld&output_format=jsonld&url=https:%2F%2Fmobilizon.chapril.org%2Fevents%2Fed969ea7-5c89-460e-b87b-6411ce747965

as the error message indicated, it seems to most likely be a CORS issue.

luzlozanothermo commented 3 years ago

if you fix this issue of CORS error, please post it, i'm struggling with the same

gkellogg commented 3 years ago

It's a server configuration issue. These are the headers returned from schema.org:

HTTP/2 200 
access-control-allow-credentials: true
access-control-allow-headers: Accept
access-control-allow-methods: GET
access-control-allow-origin: *
date: Fri, 19 Feb 2021 01:39:59 GMT
expires: Fri, 19 Feb 2021 01:49:59 GMT
etag: "v7F5aA"
x-cloud-trace-context: f8ad172246c779315ef4433df90888c6
content-type: application/ld+json
server: Google Frontend
content-length: 156492
cache-control: public, max-age=600
age: 0
alt-svc: h3-29=":443"; ma=2592000,h3-T051=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=

Key is probably access-control-allow-origin: *.

CORS was a bad idea, IMHO.

gkellogg commented 3 years ago

@davidlehn thoughts?

json-ld / json-ld.org

Dereferencing a URL did not result in a valid JSON-LD object #747