Problems with calendar dynamic event

I’ve been having problems with my calendar which works perfectly except for gotodate and it appeared that i was having a lot of errors. So I created a fresh new calendar with no frills and tried to implement a Go To Date text input box so I can easily navigate to a specific date. However, it doesn’t work with debugging I get some bootstrap errors which I don’t know how to fix. There is nothing else on the page. Please help.

The plain calendar page is:
https://www.marsalstudios.com/admin/calendar/blank_calendar.php

and the errors I get are:

parser.js:762 Formatter goToDate in expression [calendar1.goToDate(value)] doesn’t exist for type object
(anonymous) @ polyfills.js:3
DevTools failed to load SourceMap: Could not load content for https://www.marsalstudios.com/bootstrap/4/js/popper.min.js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load SourceMap: Could not load content for https://www.marsalstudios.com/bootstrap/4/js/bootstrap.min.js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE

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