Fix #822

[Rushaway]

Description

Non int return as error in the adv search on duration

Motivation and Context

For fix #822

How Has This Been Tested?

Tested, no errors in logs..
And now it print the page with search results..

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.