SDK 版本 (from Podfile.lock):
- LeanCloud (16.4.0):
- LeanCloud/IM (= 16.4.0)
- LeanCloud/Storage (= 16.4.0)
- LeanCloud/IM (16.4.0):
- FMDB (~> 2.7.0)
- LeanCloud/Storage
- Starscream (~> 3.1.0)
- SwiftProtobuf (~> 1.6.0)
- LeanCloud/Storage (16.4.0):
- Alamofire (~> 4.8.0)

Crash Stack:
App Center:

Crashlytics:

App ID: scdXQctJHMBD3xHRBdB5pfUo-MdYXbMMI

Code:

LCApplication.default.currentInstallation.set(deviceToken: data, apnsTeamId: "XXX")
_ = LCApplication.default.currentInstallation.save { (result) in
}

应该是多线程操作 currentInstallation 引起的 crash。