jTessBoxEditor v2.6.0 & jTessBoxEditorFX 2.6.0 Releases
VietOCR v6.14.0 & VietOCR.NET v6.13.0 Releases
It's because the program does not know where tesseract's tessdata directory is. You can define TESSDATA_PREFIX environment variable that contains the path to the directory. https://stackoverflow.com/questions/65597552/how-exactly-to-set-up-and-use-environment-variables-on-a-mac
VietOCR.NET v6.13.0 Release
LSTM or WORDSTR box files generated are to be used in Tesseract 4.x training, not in this program itself. The support for generating these box files was incorporated into the program on a request by a Tesseract developer. You can edit the box files, though, before using them in the training process. https://tesseract-ocr.github.io/tessdoc/tess4/TrainingTesseract-4.00.html
VietOCR v6.13.1 & VietOCR.NET v6.11.1 Releases
VietOCR v6.13.0 & VietOCR.NET v6.11.0 Releases
jTessBoxEditor v2.5.0 & jTessBoxEditorFX 2.5.0 Releases