There are two causes of this error:
1. You simply do not have a template created.
If that is the case, you will need to read the documentation on how to create a template and add it to the site.
2: You have a template but the path specified in the error message below is incorrect and you need to modify it.
To resolve this you will need to go to the database server that hosts the data for ECF and open the appropriate database (usually done with an SQL Enterprise
Manager or SQL Enterprise Studio). Database name is specified in
the web.config file of the web services site. Once you located the database you will need to modify one of two tables. It will either be CategoryTemplate or
ProductTemplate table, depending on type of the template you created.
Open the table and locate the row that has incorrect path. Modify the "TemplateUrl" field for the template. The path should be relative. For example path like
"~/MasterTemplates/Amazing/Category/PagingCategoryTemplate.ascx" will start from the root of the site directory. You should always start the path by specifying "~".
|Template path can not be empty
For more information visit http://www.mediachase.com.