Ios game crash on start on iphone worked on 4.7.6

Development Platform & Builds Mobile
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Hi, i was using 4.7.6 and this project works on ios, tested on multiple devices. Now i want to compile this project on 4.8.3 but it crashes on iphone/ipad right after the splash screen.

link text

Here is the log from device
Do i need more logs?
Using UE 4.8.3 on iMac 10.10.4