Using "Default date source: Date of first view result" causes JS error

What is the result if you choose other display format for that view?

More specifically, what is the date of the first row of the result? If it is not a validated date format or is null. The calendar view won't work.

It's my oldest event.

I also have this issue.
I am using a single smart date field

• format Smart date Formatter
• timepart start and end
• tisamrt date format : default

The browser console shows

Uncaught TypeError: Cannot read properties of null (reading 'getUTCFullYear')
    at B (main.min.js:6:4632)
    at e.startOf (main.min.js:6:62456)
    at d (main.min.js:6:69617)
    at e.buildRangeFromDuration (main.min.js:6:69815)
    at e.buildCurrentRangeInfo (main.min.js:6:68908)
    at e.build (main.min.js:6:68116)
    at main.min.js:6:72011
    at er (main.min.js:6:72235)
    at e.reduce (main.min.js:6:90654)
    at e.dispatch (main.min.js:6:89995)