How to fix error "One or more errors occurred" in SDL MultiTerm

Error content: "One or more errors occurred" errror message when adding a term in SDL MultiTerm
SDL MultiTerm version: 2017

Here's the error message:

"One or more errors occurred" appears when adding a new term in SDL MultiTerm

Method to fix this error: Terminate SDL MultiTerm and then restart the program.
Knowledge Base Community: https://community.sdl.com/ then search for the message.