Error in karten-map.php

[cfree]

Reported via email:

When I go to the web the div " ktn-map-canvas " is empty.
I don't know if this could help you, but Dreamweaver marks like "error" in karten-main.php

line 84:
if ( $params = $this::ktn_query_params( $id ) ) {

line 157:
return $this::ktn_get_map( $atts['id'] );

line 165:
echo $this::ktn_get_map( $id );

line 174:
$this::ktn_enqueue_assets( $id );