Some users have reported getting the following error message in DbVisualizer on Linux, for example while browsing the file system using the File->Open dialog.
java.nio.file.InvalidPathException: Malformed input or input contains unmappable characters: ...
This problem occurs due to characters in file or directory names not being supported by the current locale used by the operating system.
Solution
Change operating system locale to a compatible one, for example en_US.UTF-8 if available.
More details about locales, and how to update them can be found here:
https://www.geeksforgeeks.org/how-to-change-or-set-system-locales-in-linux/