Hi Matt,
We have analyzed your reported issue, this issue may get arise due to multiple reference of “JQuery” file.
Please ensure following things in your sample.
- Check multiple JQuery references are added in your project.
- There will be a chance of multiple script references from bundle and on Gantt view page or master page.
If you still facing this issue, please revert us with your sample it will helpful for us to serve you better.
Thanks,
Suriyaprasanth R.