Terminating app due to uncaught exception 'NSInvalidArgumentException'

[bezineb5]

Hi,

I'm trying to use tensorflow for mac to train my model using the tensorforce library.
However, it crashes at model initialization with this stacktrace:

2020-12-03 19:06:42.765 Python[26957:1076199] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSArrayM insertObject:atIndex:]: object cannot be nil'
*** First throw call stack:
(
        0   CoreFoundation                      0x0000000185689320 __exceptionPreprocess + 240
        1   libobjc.A.dylib                     0x00000001853b7c04 objc_exception_throw + 60
        2   CoreFoundation                      0x0000000185750064 -[__NSCFString characterAtIndex:].cold.1 + 0
        3   CoreFoundation                      0x000000018574d5b4 -[__NSArrayM insertObject:atIndex:].cold.2 + 0
        4   CoreFoundation                      0x00000001855a8274 -[__NSArrayM insertObject:atIndex:] + 1020
        5   _pywrap_tensorflow_internal.so      0x0000000106f552e0 _ZN10tensorflow9mlcompute5eager15MLCGraphBuilder3AddINSt3__16__bindIMNS1_10MLCEagerOpIfEEKFNS_6StatusEPNS_15OpKernelContextEPKNS_6TensorEPU8__strongP9MLCTensorEJPNS1_14MLCEagerMatMulIfEERSA_RKNS4_12placeholders4__phILi1EEERKNSP_ILi2EEEEEEEES8_P8MLCLayerNS4_6vectorISD_NS4_9allocatorISD_EEEESD_T_ + 340
        6   _pywrap_tensorflow_internal.so      0x0000000106f54754 _ZN10tensorflow9mlcompute5eager15MLCGraphBuilder22RunGraphWithSingleNodeINSt3__16__bindIMNS1_14MLCEagerMatMulIfEEKFP22MLCFullyConnectedLayerPNS_15OpKernelContextERS2_EJPS7_RSB_RKNS4_12placeholders4__phILi1EEEEEEPKNS_6TensorENS4_6vectorIPvNS4_9allocatorISR_EEEENS5_IMNS1_10MLCEagerOpIfEEKFNS_6StatusESB_SP_PU8__strongP9MLCTensorEJSF_SG_SL_RKNSI_ILi2EEEEEEEESX_jRT_NSQ_ISP_NSS_ISP_EEEESP_NSQ_IPSN_NSS_IS1C_EEEET0_T1_P9MLCDeviceSB_T2_NS4_12basic_stringIcNS4_11char_traitsIcEENSS_IcEEEE + 1664
        7   _pywrap_tensorflow_internal.so      0x0000000106f53894 _ZN10tensorflow9mlcompute5eager15MLCGraphBuilder22RunGraphWithSingleNodeINSt3__16__bindIMNS1_14MLCEagerMatMulIfEEKFP22MLCFullyConnectedLayerPNS_15OpKernelContextERS2_EJPS7_RSB_RKNS4_12placeholders4__phILi1EEEEEEPKNS_6TensorENS4_6vectorIPvNS4_9allocatorISR_EEEENS5_IMNS1_10MLCEagerOpIfEEKFNS_6StatusESB_SP_PU8__strongP9MLCTensorEJSF_SG_SL_RKNSI_ILi2EEEEEEEESX_jRT_SP_SP_PSN_T0_T1_P9MLCDeviceSB_T2_NS4_12basic_stringIcNS4_11char_traitsIcEENSS_IcEEEE + 256
        8   _pywrap_tensorflow_internal.so      0x0000000106f51d9c _ZN10tensorflow9mlcompute5eager14MLCEagerMatMulIfE7ComputeEPNS_15OpKernelContextE + 1620
        9   libtensorflow_framework.2.dylib     0x00000001194d75ac _ZN10tensorflow12_GLOBAL__N_113ExecutorStateINS_21SimplePropagatorStateEE7ProcessENS2_10TaggedNodeEx + 2772
        10  libtensorflow_framework.2.dylib     0x000000011954a4b4 _ZN5Eigen15ThreadPoolTemplIN10tensorflow6thread16EigenEnvironmentEE10WorkerLoopEi + 552
        11  libtensorflow_framework.2.dylib     0x000000011954a18c _ZZN10tensorflow6thread16EigenEnvironment12CreateThreadENSt3__18functionIFvvEEEENKUlvE_clEv + 80
        12  libtensorflow_framework.2.dylib     0x000000011953ba74 _ZN10tensorflow12_GLOBAL__N_17PThread8ThreadFnEPv + 104
        13  libsystem_pthread.dylib             0x000000018551106c _pthread_start + 320
        14  libsystem_pthread.dylib             0x000000018550bda0 thread_start + 8
)
libc++abi.dylib: terminating with uncaught exception of type NSException

It crashes in tensorflow/python/eager/def_function.py line 724.
Unfortunately the example is way too complex to put in a github ticket.

Do you haave any hint at what can actually be null ?

Thanks!

[anna-tikhonova]

This crash looks very generic. Is there any way for you to simplify your example, for instance, by using synthetic data?

[bezineb5]

Unfortunately not. However, I managed to reproduce it using the simplest tensorforce example (which doesn't need gym or other dependencies which don't work on apple silicon):
https://github.com/tensorforce/tensorforce/blob/master/examples/temperature-controller.ipynb

[anna-tikhonova]

We'll take a look at this tensorforce example and get back to you. Thank you!

[bezineb5]

I updated tensorflow-macos to v0.1alpha1 and it doesn't help.

[anna-tikhonova]

Please try the updated wheel (v0.1alpha2) and let us know if you are still seeing this issue. Thank you very much!

[atomiccatfish]

I am still seeing this exact same issue.