Making bootstrap datetimepicker to select only time got Invalid date format error

Hello,
In laravel 6, Bootstrap / Jquery app I want to make bootstrap-datetimepicker with
time only selection as in this
https://ift.tt/39vXXvy
example
and with blade code :

           
     <div class="form-group row">
                    <label class="col-form-label col-md-6">Time<small>(utc) </small></label>
                    <div class="col-md-6">
                        <div class="input-group date" id="time_utc">...

Code (JavaScript):

Making bootstrap datetimepicker to select only time got Invalid date format error

from JavaScript https://ift.tt/2JnHi2A
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