Internal Error- linkchecker

[Neha6Singh]

1. The URL or file you are testing - https://www.crohnscolitisfoundation.org/
2. The system information below - MacOs Cataline- V-10.15.7
3. Your command-line arguments and any custom configuration files- linkchecker --verbose --output= csv "https://www.crohnscolitisfoundation.org/" >test.csv

[Mark-Hetherington]

You might want to update your installed version to the newest one from the new project, this project is unmaintained.