PDF formater is unable to find an image file that really exists in the Windows file system

The image file is using an absolute path such as file:///C:/myimages/connectors.svg".

Correct the filepath to use a sole "/" character (ex. file:/C:/myimages/connectors.svg)

You are using Antenna House formater on a Windows base installation. In this case you may have reached the Windows filepath length limitation : no more than 260 characters.

https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file

Windows 10 allows to remove this limitation but this is not yet implemented on the Antenna House formater.

Try to reduce the amount of characters in the file path, for example by configuring the tomcat temp directory path.