Issue Navigator Prompt "The JIRA server could not be contacted..." When Trying to Search in Customfield Date Picker

Issue Navigator prompts error "The JIRA server could not be contacted. This may be a temporary glitch or the server may be down." when conducting search on the date picker field.

Steps to Reproduce

1. Create a custom field type: Date Picker
2. Create issues and provide some value in the customfield created
3. Go to issue navigator, add search criteria on the customfield
4. Select "In range" and input values at the field provided (eg: 1w to 1w 1d)
5. Search and error message noticed

same effect observed for when trying to search using search parameter more than XX minutes ago (XX = numeric value). It does not affect the other two search option which is within the last x minute and date range