Template parse errors: Can't bind to 'schema'

[nmainardi]

Error: Template parse errors:
Can't bind to 'schema' since it isn't a known property of 'json-schema-form'.

1. If 'json-schema-form' is an Angular component and it has 'schema' input, then verify that it is part of this module.
2. If 'json-schema-form' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.
3. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component. ("
   <json-schema-form
   loadExternalAssets="true"
   [ERROR ->][schema]="yourJsonSchema"
   (onSubmit)="yourOnSubmitFn($event)">
   
   "):

But i'm sure the import is correct...
I ran npm install angular2-json-schema-form but it give me an error on flex-layout so I installed the @angular/flex-layout@2.0.0-beta.12
Could be the problem?
Thank you for attention

[catull]

Too little information to help you.

Best guess, you are not declaring or importing it properly.

[nmainardi]

Well, I added

import { FlexLayoutModule } from '@angular/flex-layout';
import { JsonSchemaFormModule, MaterialDesignFrameworkModule  } from 'angular2-json-schema-form';
...
 imports: [
    FormsModule,
    ReactiveFormsModule,
    FlexLayoutModule,
   //other import...
    MaterialDesignFrameworkModule,
    JsonSchemaFormModule.forRoot(MaterialDesignFrameworkModule)]

in my app.module and directly in app.component.html

<json-schema-form
		  loadExternalAssets="true"
		  [schema]="yourJsonSchema"
		  (onSubmit)="yourOnSubmitFn($event)">
		</json-schema-form>

and in my app.component.ts

yourJsonSchema = {
  "schema": {
    "type": "object",
    "title": "Types",
    "properties": {
      "string": {
        "type": "string",
        "minLength": 3
      },
      "integer": {
        "type": "integer"
      },
      "number": {
        "type": "number"
      },
      "boolean": {
        "type": "boolean"
      }
    },
    "required": [
      "number"
    ]
  }
}
...
yourOnSubmitFn(e){
    console.log(e);
  }

[nmainardi]

Sorry, I don't really know why but now (also if editor is saying me that

json-schema-form' is not a known element:
	1. If 'json-schema-form' is an Angular component, then verify that it is part of this 
	 module.
	2. If 'json-schema-form' is a Web Component then add 
	 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress 
	 this message.

)
it works.
Sorry again and thank you.