I have added Bulk edit app on SharePoint 2019 Project server, but when I try to access the Bulk Edit App I am getting “The Resource cannot be found”.
Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly. Requested URL: /PWA/BulkEdit/Pages/Default.asp
Failing that if it’s a 404 then it might just need some time for the app to fully load (although the request url in the info you provided is incorrect it should be .aspx on the end!), check your App Management Service configuration in the SharePoint farm and confirm that you can install other apps.