I'm having this problem. My TensorFlow version is 2.9.1 File /local/vol00/home/troy3/Graph_seg_leixin/crf/crfasrnn_keras/./src/high_dim_filter_loader.py:28 in <module> custom_module = tf.load_op_library(os.path.join(os.path.dirname(__file__), 'cpp', 'high_dim_filter.so')) File ~/anaconda3/envs/tf-gpu-roys/lib/python3.9/site-packages/tensorflow/python/framework/load_library.py:54 in load_op_library lib_handle = py_tf.TF_LoadLibrary(library_filename) NotFoundError:../crf/crfasrnn_keras/./src/cpp/high_dim_filter.so: undefined symbol: _ZNK10tensorflow8OpKernel11TraceStringERKNS_15OpKernelContextEb