Scheduled reports page doesn't load

The scheduled reports page doesn't load when the filter value is empty.

Steps to reproduce:

• Create a new scheduled report using a filter
• Go to the database and change the field EXPORT_DATA to:

'{"inputType": "Filter", "value":""}' 

•  Go to the scheduled reports page and refresh the page

Actual result:

The page doesn't load

Expected result:

The page should load and display a warning to inform the user that the filter doesn't have a filter ID valid.