[7.0] 1.18.2 Fails to runclient

[Swackyy]

Replicatable on a std forge mdk on FG7, complains with the following message:

Exception in thread "main" Looking for main class: cpw.mods.bootstraplauncher.BootstrapLauncher
java.lang.IllegalStateException: Could not find main class!
        at net.minecraftforge.launcher.Main.run(Main.java:125)
        at net.minecraftforge.launcher.Main.main(Main.java:34)
Caused by: java.lang.IllegalAccessException: symbolic reference class is not accessible: class cpw.mods.bootstraplauncher.BootstrapLauncher, from public Lookup

The library and class referenced is available in the external libraries panel in my IDE