Changing the due date of an issue in an Agile board or loading a Kanban report throws Uncaught TypeError error in Jira server
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptoms
The following error is thrown on the Jira UI when trying to change the due date of an issue in an Agile board or loading a Kanban report (most common situation, but some other actions can cause this to be thrown as well) and while browsing Jira with Google Chrome
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Exception: Uncaught TypeError: Cannot read property 'length' of null
Resource: http://localhost:8080/s/fc7a364b3887ea11363641fc5fb660e9-CDN/924hpw/807001/3d9cbcc0131deac702c8acb96d367f99/9b67750f861d082569f32f1a2540a56c/_/download/contextbatch/js/gh-rapid-report,jira.project.sidebar,atl.general,jira.global,jira.general,atl.global,com.atlassian.jira.projects.sidebar.init,greenhopper-rapid-non-gadget,-_super/batch.js?agile_global_admin_condition=true&jag=true&jaguser=true&locale=fr-FR&whisper-enabled=true
Line: 2451
Column: 29367
Environment
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36 Edg/84.0.522.58
Stack trace
TypeError: Cannot read property 'length' of null
at Date.print (http://localhost:8080/s/fc7a364b3887ea11363641fc5fb660e9-CDN/924hpw/807001/3d9cbcc0131deac702c8acb96d367f99/9b67750f861d082569f32f1a2540a56c/_/download/contextbatch/js/gh-rapid-report,jira.project.sidebar,atl.general,jira.global,jira.general,atl.global,com.atlassian.jira.projects.sidebar.init,greenhopper-rapid-non-gadget,-_super/batch.js?agile_global_admin_condition=true&jag=true&jaguser=true&locale=fr-FR&whisper-enabled=true:2451:29367\)Cause
This can be caused by an invalid custom date format recently set in either or both Jira Look and Feel and Advanced Settings
Resolution
To troubleshoot the date settings in Look and Feel choose Administration>System > Look and feel and make sure that the Date Time Format is correct accordingly to Change the Date/Time format in Jira
To troubleshoot the Jira Advanced Settings choose Administration>System > Advanced Settings and make sure that all the date picker formats are entered in the right syntax as perChange the Date/Time format in Jira
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