my forge version is 1.12.2 14.23.5.2855 and im running nothing else but aw2 and code chicken lib

Next time, you must use the issue tracker template, in order to provide the information we needs. Like the crash report.
I am going to recommend looking into how much RAM you have assigned to Minecraft, you need at least 4 GBs assigned to run AW, recommended at least 6 GBs. Also, I would downgrade Forge to version ending in .2854.
Finally, I would join our discord server to receive quicker support and avoid cluttering the issue tracker.
I am going to close this issue, you should join our Discord where we can more easily support you, if nothing above helps you. We can handle it from there