IntelliJ Erlang "Cannot find declaration to go to"

Setup:

IntelliJ IDEA 202开发者_如何学Go2.2.2
Erlang plugin 0.11.1144
SDK: Erlang OTP 25, erts-13.0
Project Imported: https://github.com/FlowForwarding/enetconf

When I mouse over some variables, I get the message "Cannot find declaration to go to". As a result, I am unable to do a code walk-through. Please help me in resolving the issue.