Ios metal build can not run successful

2019-02-10 10:48:40.481876+0800 untitled[1415:251064] [DYMTLInitPlatform] platform initialization successful

2019-02-10 10:48:40.547184+0800 untitled[1415:250858] Metal GPU Frame Capture Enabled

2019-02-10 10:48:40.547692+0800 untitled[1415:250858] Metal API Validation Enabled

Starting KoreHL

Assertion failed: (mtlFunction), function Shader, file /private/var/folders/dr/h4d9bxs15l9fw4kpjy7q2xf80000gp/T/AppTranslocation/77686F3E-C168-4DA5-A8AB-1ED00184B1AE/d/blender.app/armsdk/Kha/Kore/Backends/Graphics5/Metal/Sources/Kore/Shader5Impl.mm, line 48.