# Error: no schema with key or ref "http://json-schema.org/Draft/2019-09/schema"

**URL:** <https://jsonforms.discourse.group/t/error-no-schema-with-key-or-ref-http-json-schema-org-draft-2019-09-schema/1560>\
**Category:** General\
**Created:** [June 27, 2023, 7:20pm UTC](https://jsonforms.discourse.group/t/error-no-schema-with-key-or-ref-http-json-schema-org-draft-2019-09-schema/1560 "2023-06-27T19:20:56Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![arvindram11](https://yyz2.discourse-cdn.com/free1/user_avatar/jsonforms.discourse.group/arvindram11/32/749_2.png) [@arvindram11](https://jsonforms.discourse.group/u/arvindram11)\
**Post date:** [June 27, 2023, 7:20pm UTC](https://jsonforms.discourse.group/t/error-no-schema-with-key-or-ref-http-json-schema-org-draft-2019-09-schema/1560/1 "2023-06-27T19:20:57Z")

</div>

Full error:  
ERROR Error: no schema with key or ref “[http://json-schema.org/Draft/2019-09/schema](http://json-schema.org/Draft/2019-09/schema)”  
validate core.js:147  
validateSchema core.js:260  
\_addSchema core.js:460  
compile core.js:158  
coreReducer jsonforms-core.esm.js:430

I implemented a simple angular app (a POC) that loads a schema and a test json payload using both the default generate as well as a custom uischema and in both instances we get the above error in the browser console. The fields still seem to populate, but it doesn’t look like any schema validations are happening (probably because of the above error). I also tried the jsonforms-angular-seed app from github and while the default schema.json doesn’t thrown any errors, when I add the below line to the schema (even though I don’t use any draft 2019 features), I get the same error:

“$schema”: “[http://json-schema.org/Draft/2019-09/schema](http://json-schema.org/Draft/2019-09/schema)”,

I also tried the below code (overriding the ajv creation; using the example provided here: [JSON Schema | Ajv JSON schema validator](https://ajv.js.org/json-schema.html#draft-2019-09) ) but that didn’t seem to make any difference either.

app.component.ts:

import Ajv2019 from “ajv/dist/2019”  
…  
…

ajv2019 = new Ajv2019()

app.component.html:

\<jsonforms  
[data]=“data”  
[schema]=“schema”  
[renderers]=“renderers”  
[uischema]=“uischema”  
[i18n]=“i18n”  
[ajv]=“ **ajv2019** ”  
validationMode=‘ValidateAndShow’

> 

Any pointers?

---

<div class="post-metadata">

**Author:** ![arvindram11](https://yyz2.discourse-cdn.com/free1/user_avatar/jsonforms.discourse.group/arvindram11/32/749_2.png) [@arvindram11](https://jsonforms.discourse.group/u/arvindram11)\
**Post date:** [June 28, 2023, 1:24am UTC](https://jsonforms.discourse.group/t/error-no-schema-with-key-or-ref-http-json-schema-org-draft-2019-09-schema/1560/2 "2023-06-28T01:24:38Z")

</div>

Amateur mistake - I assumed that the team that did the specification for the schema were right. They were missing the “s” in http as well as “cAsE” sensitive issue with “Draft” instead of “draft”. 5 hours I won’t get back. 🙂