Traceback (most recent call last):
  File "/usr/lib64/python3.7/site-packages/flask/app.py", line 2309, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/lib64/python3.7/site-packages/flask/app.py", line 2295, in wsgi_app
    response = self.handle_exception(e)
  File "/usr/lib64/python3.7/site-packages/flask_restful/__init__.py", line 269, in error_router
    return original_handler(e)
  File "/usr/lib64/python3.7/site-packages/flask/app.py", line 1741, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/lib64/python3.7/site-packages/flask/_compat.py", line 35, in reraise
    raise value
  File "/usr/lib64/python3.7/site-packages/flask/app.py", line 2292, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/lib64/python3.7/site-packages/flask/app.py", line 1815, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/lib64/python3.7/site-packages/flask_restful/__init__.py", line 269, in error_router
    return original_handler(e)
  File "/usr/lib64/python3.7/site-packages/flask/app.py", line 1718, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/lib64/python3.7/site-packages/flask/_compat.py", line 35, in reraise
    raise value
  File "/usr/lib64/python3.7/site-packages/flask/app.py", line 1813, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/lib64/python3.7/site-packages/flask/app.py", line 1799, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/root/contrib/python/Kerasplan/kerasplan/api.py", line 92, in upload_file
    classes = context.model.predict(img)
  File "/usr/lib64/python3.7/site-packages/tensorflow/python/keras/engine/training.py", line 1078, in predict
    callbacks=callbacks)
  File "/usr/lib64/python3.7/site-packages/tensorflow/python/keras/engine/training_arrays.py", line 157, in model_iteration
    f = _make_execution_function(model, mode)
  File "/usr/lib64/python3.7/site-packages/tensorflow/python/keras/engine/training_arrays.py", line 532, in _make_execution_function
    return model._make_execution_function(mode)
  File "/usr/lib64/python3.7/site-packages/tensorflow/python/keras/engine/training.py", line 2282, in _make_execution_function
    self._make_predict_function()
  File "/usr/lib64/python3.7/site-packages/tensorflow/python/keras/engine/training.py", line 2272, in _make_predict_function
    **kwargs)
  File "/usr/lib64/python3.7/site-packages/tensorflow/python/keras/backend.py", line 3479, in function
    return GraphExecutionFunction(inputs, outputs, updates=updates, **kwargs)
  File "/usr/lib64/python3.7/site-packages/tensorflow/python/keras/backend.py", line 3142, in __init__
    with ops.control_dependencies([self.outputs[0]]):
  File "/usr/lib64/python3.7/site-packages/tensorflow/python/framework/ops.py", line 5426, in control_dependencies
    return get_default_graph().control_dependencies(control_inputs)
  File "/usr/lib64/python3.7/site-packages/tensorflow/python/framework/ops.py", line 4867, in control_dependencies
    c = self.as_graph_element(c)
  File "/usr/lib64/python3.7/site-packages/tensorflow/python/framework/ops.py", line 3796, in as_graph_element
    return self._as_graph_element_locked(obj, allow_tensor, allow_operation)
  File "/usr/lib64/python3.7/site-packages/tensorflow/python/framework/ops.py", line 3875, in _as_graph_element_locked
    raise ValueError("Tensor %s is not an element of this graph." % obj)
ValueError: Tensor Tensor("dense_1/Softmax:0", shape=(?, 2), dtype=float32) is not an element of this graph.