The library post has been updated to remove this error and the ITF file amended to a new v1.1.
If you have already downloaded the indicator then either download the new version or correct the error by removing the small section of code from the first version as described in the library post comments section.
Warning: Trading may expose you to risk of loss greater than your deposits and is only suitable for experienced clients who have sufficient financial means to bear such risk. The articles, codes and content on this website only contain general information. They are not personal or investment advice nor a solicitation to buy or sell any financial instrument. Each investor must make their own judgement about the appropriateness of trading a financial instrument to their own financial, fiscal and legal situation.