App crashing when trying to open scanner in release build

[hansAtLIS]

Hello,
in the project of my company the app currently crashes when trying to open it.
This only happens when the app is build in the relase configuration but works like a charm in debug.
Do you have any idea how to implement the scanner in a different way to stop this behavior?
This is how its implemented as a popup:

<?xml version="1.0" encoding="utf-8" ?>
<local:BasePage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
                xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                x:Class="App.Views.Popups.ScannerPopupPage"
                xmlns:zxing="clr-namespace:ZXing.Net.Maui.Controls;assembly=ZXing.Net.MAUI.Controls"
                xmlns:local="clr-namespace:App"
                xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
                xmlns:strings="clr-namespace:App.Resources.Strings"
                Title="{x:Static strings:AppResources.Scanner}">
  <Grid>
    <ContentView x:Name="BarcodeReaderContainer"
                 IsVisible="true">
      <zxing:CameraBarcodeReaderView x:Name="CameraBarcodeReader"
                                     BarcodesDetected="BarcodeDetected"
                                     VerticalOptions="FillAndExpand"
                                     HorizontalOptions="FillAndExpand" />
    </ContentView>


    <BoxView x:Name="UpperGrayedOutSection"
             Style="{StaticResource GrayedOutSection}"
             VerticalOptions="Start" />

    <BoxView x:Name="LowerGrayedOutSection"
             Style="{StaticResource GrayedOutSection}"
             VerticalOptions="End" />

    <BoxView x:Name="redline" IsVisible="true" Style="{StaticResource RedLine}"/>

    <Button x:Name="CloseButton" Style="{StaticResource CloseModalButtonStyle}"
            Clicked="OnCloseButtonClicked" />

    <Button x:Name="FlashlightButton" Style="{StaticResource FlashlightButtonStyle}"
            Clicked="OnFlashlightButtonClicked">

      <Button.ImageSource>
        <FileImageSource File="flashlight.png"></FileImageSource>
      </Button.ImageSource>

    </Button>

    <ImageButton Source="pause_icon"
                 IsVisible="False"
                 x:Name="PlayButton"
                 WidthRequest="100"
                 Clicked="PlayButton_Clicked" />

    <ContentView x:Name="AdditionaleContent"
                 VerticalOptions="End"
                 HorizontalOptions="StartAndExpand"
                 Margin="0,0,0,35" />

    <toolkit:MediaElement x:Name="beepPositive"
                          IsVisible="False"
                          Source="Resources/Sounds/BeepPositive.wav"/>
    <toolkit:MediaElement x:Name="beepNegative" 
                          IsVisible="False"
                          Source="Resources/Sounds/error-sound.wav"/>
  </Grid>

</local:BasePage>

I'll gladly provide additional info if needed.
Best regards,
Hans