DeepVocal ToolBox "Error: Symbol list is empty..."

I am currently trying to use DeepVocal ToolBox to build my voicebank, however when I go to build the voice model files, I get the error of “Error: Symbol list is empty…” I don’t really know how to fix this? I did use oto2dvcfg to convert the oto of my voicebank from UTAU to to a dvcfg file, which when opened in the “build voice config,” is able to be opened. If anyone is able to help me it will be greatly appreciated!

Also, I have uninstalled and reinstalled the toolbox, but there is the same problem.

Please check your phonic dictionary to see if there is anything in there and try again.