tesseract 4.00 Trainging_text iteration failed to respond tp page 3402

[YiWenFY]

Training data is created using tesstrain.sh ：
./src/training/tesstrain.sh --fonts_dir /usr/share/fonts --lang chi_sim --linedata_only
--noextract_font_properties --langdata_dir ../langdata
--tessdata_dir ./tessdata
--fontlist "WenQuanYi Zen Hei Medium"
--output_dir ~/tesstutorial/trainplusminus
Trainging_text iteration failed to respond tp page 3402.
log：Rendered page 3402 to file /tmp/tmp.UtQvClRYtq/chi_sim.WenQuanYi_Zen_Hei_Medium.exp0.tif
version:4.0.0