Hello there @Kris1402!
This is quite a tricky scenario you are encountering. After checking your log, no clear cultrip is present for Error_UnknownCookFailure. The most likely cause is a conflict with either plugin BlueprintHttp, or your xcode 16 setup. Let’s cover the following:
- Ensure the plugin is being called from your .uproject file
- SupportedTargetPlatforms": [“IOS”] should be set at BlueprintHttp.uplugin
- If the plugin is properly compiled, check your Binaries folder for its related file
- UE 5.4 support is limited to Xcode 15.x and iOS 17.x SDK at the moment, consider downgrading for your test
- Finally, there’s an extended log available, as seen here:
Cook failed.
(see C:\Users\User\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.4\Log.txt for full exception trace)
Please share the contents of that log here, as we can find a more specific error.