Before I write anything I'm sorry if I'm writing in the wrong forum category.
I spent half an hour trying to figure out how to install forge since file association didn't see Java and the forge installer wouldn't work otherwise, so I just made a .bat file and launched the .jar file using that, after I fixed that I problem I installed the JEI items mod and after the world loaded to 100% the game hard crashed and gave me an error log that said the following:
---- Minecraft Crash Report ----
// There are four lights!
Time: 02/07/19 23:19
Description: Unexpected error
java.lang.NoClassDefFoundError: net/minecraftforge/fml/common/progress/StartupProgressManager
All the other information is in the file listed below.
crash-2019-07-02_23.19.33-client.txt