I get datepicker error in console.

I get this error in console of my website.

Failed to load resource: the server responded with a status of 404 (Not Found)

My site : https://theskafilm.com/newweb

I’m not sure it’s relevant to the version of wordpress or not.
It is not damaging, but customers may not be reliable.

Thanks for help and reply all along. ??
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