RLException: Invalid <node> tag: package must be non-empty.

This error is typically encountered in the context of an XML file or configuration file. The <node> tag is used to define a node or element within the file, and it is telling you that the "package" attribute for this particular node is empty or missing.

To fix this error, you need to ensure that the package attribute is properly defined for the <node> tag. This attribute should contain a non-empty value that identifies the package or namespace for the node.

For example, if you are working with an AndroidManifest.xml file, the <node> tag might look something like this:

<node
name="MainActivity"
label="@string/app_name"
icon="@drawable/ic_launcher"
package="com.example.myapp" />

In this case, the package attribute is set to "com.example.myapp", which is the package name for the app. Make sure that your <node> tags have a similar package attribute that is properly set.