logs are really useful for troubleshooting. I would like to understand why you dont have access to the logs. Is this production environment where you dont have access to server? it should be possible to get read only access to logs
By default syslog only shows the ERROR level logs. May be there isn’t an actual ERROR, but a miss of logic or Error handling. It would be great if you can share more details about the report (if its OOTB or custom) and how you launch it