Description
Field Script and Element Script evaluators using the VBScript language are no longer supported as of the ArcGIS Pro 3.5 release. You can no longer create or build a network dataset with these types of evaluators. The network dataset template is unusable with the current software.
Solution
Choose a different network dataset template or re-create the network dataset template after updating the network dataset used to create it.
To update the network, update its evaluators to the Python language, rebuild the network, and create the template again with the Create Template From Network Dataset tool.