split时这个bug是啥原因呢？

"split时这个bug是啥原因呢？tensorflow/core/common_runtime/gpu/gpu_device.cc:1325] Created TensorFlow device (/job:localhost/replica:0/task:0/device:GPU:3 with 14069 MB memory) -> physical GPU (device: 3, name: Tesla T4, pci bus id: 0000:00:0b.0, compute capability: 7.5) Traceback (most recent call last): File ""../easy_rec/python/tools/split_model_pai.py"", line 276, in tf.app.run() File ""/data/soft/anaconda3/envs/xurec/lib/python3.7/site-packages/tensorflow_core/python/platform/app.py"", line 40, in run _run(main=main, argv=argv, flags_parser=_parse_flags_tolerate_undef) File ""/data/soft/anaconda3/envs/xurec/lib/python3.7/site-packages/absl/app.py"", line 312, in run _run_main(main, args) File ""/data/soft/anaconda3/envs/xurec/lib/python3.7/site-packages/absl/app.py"", line 258, in _run_main sys.exit(main(argv)) File ""../easy_rec/python/tools/split_model_pai.py"", line 263, in main part_dir=FLAGS.user_model_dir) File ""../easy_rec/python/tools/split_model_pai.py"", line 203, in export saver = tf_saver.Saver() File ""/data/soft/anaconda3/envs/xurec/lib/python3.7/site-packages/tensorflow_core/python/training/saver.py"", line 828, in init self.build() File ""/data/soft/anaconda3/envs/xurec/lib/python3.7/site-packages/tensorflow_core/python/training/saver.py"", line 840, in build self._build(self._filename, build_save=True, build_restore=True) File ""/data/soft/anaconda3/envs/xurec/lib/python3.7/site-packages/tensorflow_core/python/training/saver.py"", line 865, in _build raise ValueError(""No variables to save"") ValueError: No variables to save"