Hello,
 
	I just joined your wonderful forum for a problem, I'm currently assembling a modpack to play for on my root server, I used a bigger modpack and modified it, throwing mods out and putting some new in.
 
	Unfortunately, I'm encountering a weird error, sometimes the server crashes on startup bc of a few mods(not every time the same ones) throwing “Failed to create mod instance”.
 
	At the final error message, the mods which failed to load get listed with:
 
	Debug Log: https://mclo.gs/cdghkzb
 
	Crash Log: https://mclo.gs/oDWhIOE
 
	Thanks in advance!
 
	PS: @diesieben07 Du machst echt gute Arbeit, bei jedem Problem auf diesem Forum sehe ich dich mit den einfachsten Antworten , danke. (sorry for german lang)
 
	 
 
	Edit: Waystones https://mclo.gs/5kpeB37 , Artifacts https://mclo.gs/S1pYqud
 
	Looks like every mod has the same error: "Exception message: java.util.ConcurrentModificationException"