Searching with JQL and development properties

[Jeremy Fiel]

We are using Jira Server 9.4.2.

I checked the advanced documentation and didn't see any related information to my error.

When I searched with the following jql string, the icon to the left of the search box indicates an error with the Red diamond and white Exclamation.

development[pullrequests].open > 0 and type = 'story' and assignee is EMPTY

The search results appear correct and I wasn't able to get the search to validate and give the green checkmark. Is this a bug in the search that it doesn't recognize the development subscript and property name?  This is preventing me from using this jql string in the vs code extension, 

Something went wrong

Error in JQL Query: Expecting either a value, list or function before the end of the query.

[RambanamP · Accepted solution]

can you restart server and check it may work!!

if not share the error log!

[Yves Liesy]

Problem solved in another way. Thank you four your quik answer.

Regards

[RambanamP]

it will help to other users if you share the answers, how you have resolved this issue!!