FileProvider IllegalArgumentException

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.CAMERA"/>
<uses-feature 
    android:name="android.hardware.camera"
    android:required="true" />


....


        <provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="de.domain.app.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true">
        <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/provider_paths"/>
        </provider>

protected void BildAufnehmen()
    {
        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);


        if (takePictureIntent.resolveActivity(getContext().getPackageManager()) != null)
        {
            File photoFile = null;


            try
            {
                photoFile = createImageFile();
            }
            catch (Exception e)
            {
                e.getStackTrace();
            }


            if (photoFile != null)
            {
                try
                {
                    Uri photoURI = FileProvider.getUriForFile(getActivity(),
                            "de.domain.app.fileprovider",
                            photoFile);


                    takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);


                    startActivityForResult(takePictureIntent, 101);
                }
                catch(Exception e)
                {
                    e.printStackTrace();
                }
            }
        }
    }


    private File createImageFile()
    {
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());


        String imageFileName = "jpeg_" + timeStamp + "_";


        File storageDir = getActivity().getExternalFilesDir("bilder");


        if (!storageDir.exists())
        {
            if (!storageDir.mkdirs())
            {
                return null;
            }
        }


        File image = null;


        try
        {
            image = File.createTempFile(
                    imageFileName,  /* prefix */
                    ".jpg",   /* suffix */
                    storageDir      /* directory */
            );
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }


        mCurrentPhotoPath = image.getAbsolutePath();


        return image;
    }

public void onActivityResult(int requestCode, int resultCode, Intent data)
    {
        super.onActivityResult(requestCode, resultCode, data);


        switch (resultCode)
        {
            case Activity.RESULT_OK:
            {
                Bundle extras = data.getExtras();


                Bitmap imageBitmap = (Bitmap) extras.get("data");


                m_view_imagebutton_bild.setImageBitmap(imageBitmap);


                //m_view_imagebutton_bild.setImageURI(file);
            }
            break;


            case Activity.RESULT_CANCELED:
            {
                // Abbruchmeldung anzeigen...
            }
            break;
        }
    }