JIRA REST API unable to filter data by custom column

[Mabutho_Mncube]

hi there,

https://tools.standardbank.co.za/jira/rest/api/2/search?jql=project=ard%20and%20customfield_18625=%222019/PI%20#3%22  

having a problem trying to filter Rest API results using Jira custom column but getting the below error

"

{"errorMessages":["Error in the JQL Query: The quoted string '2019/PI ' has not been completed. (line 1, character 35)"],"errors":{}}

"

the column name is Programme Increment = customfield_18625

it works perfect on jira but NOT on the browser