These are the error messages I was getting when opening the game with dev tools.
Viewing post in [CGMZ][Alpha] Swimming for RPG Maker MZ comments
Hi, sorry for taking so long to get back to you. Those warnings are normal in the console, and can be ignored.
I am honestly not sure why it's not working for you and Itch comments are not very easy to troubleshoot problems like this, so I have went ahead and made a demo project for this plugin. Hopefully the demo clears things up for you, let me know if you are still having problems with the splash animation after looking at the demo.