4.27 doesn't let me into the editor

I have an iOS game on the App Store, and thought about upgrading it from 4.26 to 4.27 to utilise the new mobile upgrades. Trying to launch my project spits out this error window…

350191-why.png

I’m unable to work on the game now. This doesn’t make sense to me. I’m not working with raytracing and other stuff, but the engine doesn’t let me launch it anymore even though my computer has the power to do so without any issue. I’ve been using Unreal in 4K without any stuttering or issues all this time… Is there any way to bypass this?