code: def test_fail_load_transformer(self):
      pickle.dump([0, 1, 2], open("tmp", "wb"))
      with pytest.raises(ValueError):
          RDF2VecTransformer.load("tmp")
      os.remove("tmp")
  
file_path: pyRDF2Vec/tests/test_rdf2vec.py
imports: import os
  import pickle
  import numpy
  import pytest
  from pyrdf2vec.graphs import KG, Vertex
  from pyrdf2vec.rdf2vec import RDF2VecTransformer
  from pyrdf2vec.walkers import RandomWalker, WLWalker
label_desc: Use image node_id 2 for calling the TestRDF2VecTransformer obj's underlying member method code with example usage: obj.test_fail_load_transformer() without return types