Calendar is not working in next js 15.1.6

[saman2007]

Hello.

We were using Next.js 14.2.13 and everything was working as expected. We decided to upgrade our Next.js version to 15.1.6. But it seems that the calendar has stopped working since i upgraded Next.js and it throws strange errors that I can’t figure out how to fix. I get these strange errors anywhere i use this calendar.

Here is the calendar code:

        <Calendar
            value={value}
            onChange={onChange}
            minimumDate={minDate}
            maximumDate={maximumDate}
            colorPrimary='#726B9A'
            colorPrimaryLight='#e4e1f7'
            calendarClassName={styles.calendar}
            locale={calendarLocales}
            // calendarClassName="responsive-calendar"
          />

With this, i get this error: TypeError: O is not a function

When i remove locale prop, the error will change to this: TypeError: Cannot read properties of undefined (reading 'weekDays')

I think it doesn't matter how the code is. For example look at this code:

    <Calendar
      value={null}
      onChange={() => {}}
      shouldHighlightWeekends
    />

I get this error: TypeError: Cannot read properties of undefined (reading 'weekDays')

As i said, in Next.js 14.2.13 the first code snippet was working correctly. After i upgraded Next.js to 15.1.6, it stopped working and I don't know how to fix the issue.

Thanks for your help.