"No available styles" in cq:Dialog Adobe AEM 6.4

Hi Guys,

I'm with the problem on the dialog in this component. It is showing the message "No available styles"

I found a similar ticket on the forum ("No available styles" in TouchUI Dialog ) but didn't resolve.

Follow the XML structures:

Component:

<?xml version="1.0" encoding="UTF-8"?>

<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"

    jcr:primaryType="cq:Component"

    jcr:title="Key"

    sling:resourceSuperType="/libs/wcm/foundation/components/text"

    componentGroup=".hidden"/>

Dialog:

<?xml version="1.0" encoding="UTF-8"?>

<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0"

xmlns:cq="http://www.day.com/jcr/cq/1.0"

xmlns:jcr="http://www.jcp.org/jcr/1.0"

xmlns:nt="http://www.jcp.org/jcr/nt/1.0"

jcr:primaryType="nt:unstructured"

sling:resourceType="cq/gui/components/authoring/dialog">

<content jcr:primaryType="nt:unstructured"

sling:resourceType="granite/ui/components/coral/foundation/container">

<layout jcr:primaryType="nt:unstructured"

sling:resourceType="granite/ui/components/foundation/layouts/fixedcolumns" />

<items jcr:primaryType="nt:unstructured">

<column jcr:primaryType="nt:unstructured"

sling:resourceType="granite/ui/components/coral/foundation/container">

<items jcr:primaryType="nt:unstructured">

<text jcr:primaryType="nt:unstructured"

sling:resourceType="granite/ui/components/coral/foundation/form/textfield"

fieldLabel="Text" required="{Boolean}true" name="./text" />

</items>

</column>

</items>

</content>

</jcr:root>

Any suggestion to resolve the problem?

Thanks