Attempting to combined 2 feature classes one lines and one points to the same feature class for arcgis Dashboards

[DChavis]

This is the code: both feature classes have the same attributes, so I want all the attributes combined except for geometry which can be ignored. When I attempt this the error code "Test execution error: Unknown Error. Verify test data." keeps popping up. 

var p = Portal("https://arcgis.com");

var points = FeatureSetByPortalItem(p, "22e8f851a85f4b99b1a2ce2542e9b09c", 0, [], false);

var lines = FeatureSetByPortalItem(p, "f64502f467a043658818eed4317aa90e", 0, [], false);

var combinedFeatures = [];

// Combine attributes from points

for (var i = 0; i < Count(points); i++) {

  var attributes = points[i].attributes;

  combinedFeatures.push(attributes);

}

// Combine attributes from lines

for (var i = 0; i < Count(lines); i++) {

  var attributes = lines[i].attributes;

  combinedFeatures.push(attributes);

}

// Resulting feature set

var joinedFeatureSet = {

  'fields': points.fields, // All feature layers have the same fields

  'features': combinedFeatures

};

return joinedFeatureSet;

[KenBuja]

Take a look at this blog post by @jcarlson about how to "memorize" a FeatureSet. You should be able to use the same logic to loop through both FeatureSets to combine them into one.