I have a cached tiled map service hosted in our standalone ArcGIS Server 10.9.1 environment being displayed in a web application for public use. This web application contains the print widget which uses a "custom" print service also hosted in our standalone ArcGIS Server 10.9.1 environment.
As of recently, a few users have been mentioned that when attempting to print a PDF containing this cached tiled map service (with the service visible), the returned PDF from the print service does not show the appropriate layer (the layer is not visible in the PDF, but visible in the web application). Attempting to replicate the issue, I found that the issue is VERY intermittent and not specific to any web browser (replicated on Edge, Firefox, and Chrome). Looking at the server logs, I found the following errors for this specific cached tiled map service.
- Method failed.HRESULT = 0x80004005 : Unspecified error .
- Missing parameter: MapName

I am unfamiliar with this issue and error log. Has anyone else experienced this issue before?