Undefined symbols for architecture x86_64:

After I install EstimoteFleetManagement with terminal on Xcode, this error appears.

Undefined symbols for architecture x86_64:
“___isOSVersionAtLeast”, referenced from:
-[ECOSensors_EST initWithSensorsSink:scanRestartInterval:] in EstimoteFleetManagementSDK(libEstimoteFleetManagementSDK.a-x86_64-master.o)
-[ECOSensors_EST updateARKitDelegate] in EstimoteFleetManagementSDK(libEstimoteFleetManagementSDK.a-x86_64-master.o)
ld: symbol(s) not found for architecture x86_64
clang-7: error: linker command failed with exit code 1 (use -v to see invocation)

Anyone can help me with this?