I'm trying to create a custom metric in the Insights Metric Editor. I select an element in the column on the right and click Add. It does not add the element. Instead, a red "Unexpected end of string" error message appears in the Metric Editor.
Support Professional or Enterprise account with access to Insights. Error appears in all browsers.
The green Add button on the lower right is for creating the metric, not adding an element. The error message means the metric is incomplete.
To add an element
- Click the Add Selected button on the top right or double-click the element in the list.