Lookup Using List Issue in ServiceNow PDI

AnaghaKP
Tera Contributor

The lookup for incidents, problems, and changes is not appearing. When selecting these options, they do not open, and the dropdown for these fields is not showing up either.
I have tried releasing the instance and tried with new instance. Still this issue is coming.
I have also tried clearing cache and cache.do.

It would be great if someone could help me resolve this issue.