I have minecraft with forge 14.23.5.2814 and when I launch it, it stops at step ModIdMapping - Minecraft Forge(as shown in attached screenshot) and unfreezes only after about 1 hour. I tried to use forge 14.23.5.2815, but that doesn't help. In attached log(there is no any crash report) 2387th line is last message before this step.
2019-02-21-4.log