TypeError: Cannot read properties of undefined (reading '_super')

[Regnalf]

I get the following error when I try to use the script:

The field is converted into a colour selection field, but no colour selection window opens when you click on it.

[Regnalf]

And it seems not to work with multiple color fields!

[hakito]

Shouldn't this line

https://github.com/kallookoo/wp-color-picker-alpha/blob/399e2d9c107e27cf5c3937c960cd1d9b356465f3/src/wp-color-picker-alpha.js#L271

be

this._super();

[wildoperation]

Shouldn't this line

https://github.com/kallookoo/wp-color-picker-alpha/blob/399e2d9c107e27cf5c3937c960cd1d9b356465f3/src/wp-color-picker-alpha.js#L271

be

this._super();

This fixed the error for me and the picker appears to work as expected now.

Thanks!