Filters screen is working on first time but not working all the time

Hello,
Greetings of the day!
I am trying to use FilterBar control in my application. While clicking on filters button at first time I am getting filters dialog. when I am trying to click second time I am getting dump like below.

filter.png

Can anyone tell me how to solve this error
Thanks and best regards
Anusha

<VBox
   height="100%"
   fitContainer="true">
   <items>
      <fb:FilterBar
         reset="onReset"
         search=".handleShow"
         showRestoreButton="true"
         filterContainerWidth="17rem"
         showClearButton="true">
         <fb:filterGroupItems>
            <fb:FilterGroupItem
               groupName="g1"
               label="Partner"
               name="Partner"
               partOfCurrentVariant="true"
               visibleInFilterBar="true">
               <fb:control>
                  <g:shMultiOrgAll
                     id="Partner"
                     hideLoading="true"
                     modelName="oModel"
                     required="true"
                     disabledFilters="{SearchHelpProperties>/Partner/disabledFilters}"
                     path="/transactionPartner"
                     selectOptions="{SearchHelpProperties>/Partner/selectOptions}"
                     roleSelOptions="{SearchHelpProperties>/Partner/roleSelOptions}"/>
               </fb:control>
            </fb:FilterGroupItem>
            <fb:FilterGroupItem
               groupName="g1"
               name="period"
               label="{i18n>std.period}"
               partOfCurrentVariant="true"
               visibleInFilterBar="true">
               <fb:control>
                  <DateRangeSelection
                     width="100%"
                     id="period"
                     displayFormat="medium"
                     required="true"
                     value="{oModel>/period}"
                     change=".validatePeriodDates">
                  </DateRangeSelection>
               </fb:control>
            </fb:FilterGroupItem>
         </fb:filterGroupItems>
      </fb:FilterBar>
    </items>
</VBox>