What Does This Error Message mean?

[ppostel]

Running a CoS 5E game. This error message started appearing. I have no idea what it means. Can someone translate it for me? Thanks!

Script execution error: [string "scripts/data_library_com.lua"]:3: attempt to call field 'showDockTitleText' (a nil value)

[Sulimo]

It means that it was expecting to find something in the field 'showDockTitleText', but found nothing.

Most likely this is caused by an extension that is out of date. Especially since the script that is showing in the error message (data_library_com.lua) does not exist in 5E or CoreRPG, so it is most likely an extension.

Disable your extensions and try again, if that resolves it, add them one at a time until you find the culprit and see if there is an updated version of the extension.

[ppostel]

Thanks. That did it. It's my Curse of Strahd theme. I'll see if there is an update to it.