crash with tensorflow 2.4.0

[dafnevk]

I noticed several times that locally (linux, python=3.8) e2e-Dutch crashes if I have tensorflow 2.4.0 installed, but it does work with 2.3.0. On GH actions there is no problem with 2.4.0.

Log of the crash:

collecting ... Fatal Python error: Aborted

Current thread 0x00007effa60be740 (most recent call first):
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 1101 in create_module
  File "<frozen importlib._bootstrap>", line 556 in module_from_spec
  File "<frozen importlib._bootstrap>", line 657 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 975 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 991 in _find_and_load
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/tensorflow/python/pywrap_tensorflow.py", line 64 in <module>
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 783 in exec_module
  File "<frozen importlib._bootstrap>", line 671 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 975 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 991 in _find_and_load
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1042 in _handle_fromlist
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/tensorflow/python/__init__.py", line 39 in <module>
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 783 in exec_module
  File "<frozen importlib._bootstrap>", line 671 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 975 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 991 in _find_and_load
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 961 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 991 in _find_and_load
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/tensorflow/__init__.py", line 41 in <module>
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 783 in exec_module
  File "<frozen importlib._bootstrap>", line 671 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 975 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 991 in _find_and_load
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 961 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 991 in _find_and_load
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 961 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 991 in _find_and_load
  File "/home/dafne/filter-bubble/e2e-Dutch/test/test_coref_model.py", line 1 in <module>
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 170 in exec_module
  File "<frozen importlib._bootstrap>", line 671 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 975 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 991 in _find_and_load
  File "<frozen importlib._bootstrap>", line 1014 in _gcd_import
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/importlib/__init__.py", line 127 in import_module
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/pathlib.py", line 531 in import_path
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/python.py", line 578 in _importtestmodule
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/python.py", line 500 in _getobj
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/python.py", line 291 in obj
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/python.py", line 516 in _inject_setup_module_fixture
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/python.py", line 503 in collect
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/runner.py", line 341 in <lambda>
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/runner.py", line 311 in from_call
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/runner.py", line 341 in pytest_make_collect_report
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/runner.py", line 458 in collect_one_node
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/main.py", line 808 in genitems
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/main.py", line 634 in perform_collect
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/main.py", line 333 in pytest_collection
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/main.py", line 322 in _main
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/main.py", line 269 in wrap_session
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/main.py", line 316 in pytest_cmdline_main
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/config/__init__.py", line 162 in main
  File "/home/dafne/anaconda3/envs/e2etestpip/lib/python3.8/site-packages/_pytest/config/__init__.py", line 185 in console_main
  File "/home/dafne/anaconda3/envs/e2etestpip/bin/pytest", line 8 in <module>
Aborted (core dumped)