Dashlet not working after update to 1.60.1

Following the update to 1.60.1 our Data Processor dashlet is no longer working. On opening the CiviCRM Dashboard, the dashlet is blanks and an error appears in the top right reading, 'Network Error: Unable to reach the server. Please refresh this page in your browser and try again.' The following error is generated in the browser console:

[Error] Failed to load resource: the server responded with a status of 500 () (dashlet, line 0) https://example.net/civicrm/dataprocessor/form/dashlet?reset=1&data_processor=recent_new_contacts&snippet=json&crmAngularModules=api4,crmDashboard,crmResource,crmUi,crmUtil,dialogService,ui.sortable

I've tried alternative browsers and see the same issue. I've tried disabling and reenabling the extension, which usually solves most problems, but hasn't here. The report output of the same data processor seems to be working just fine.