Steps to reproduce:
1. Create a discovery rule
2. Add a graph. When choosing items, choose "add prototype", switch to Type - Aggregate. Then try to select a parameter: the pop-up will be empty. Switching back to Type - Simple doesn't help.
Steps to reproduce:
1. Create a discovery rule
2. Add a graph. When choosing items, choose "add prototype", switch to Type - Aggregate. Then try to select a parameter: the pop-up will be empty. Switching back to Type - Simple doesn't help.