ng-file-upload issue on IE9 - after uploading one file receiving error

Question

var prevFiles = ((ngModel && ngModel.$modelValue) || attr.$$ngfPrevFiles || []).slice(0);

I am getting an error that the result of this statement does not have a slice method.

Answer 1

Without knowing too much about the module I have a theory:

The first evaluation (ngModel && ngModel.$modelValue), when true, returns a Boolean which does not have a slice method.