Cannot load python library exceptions.py on branch 18-support-various-dem-as-input

When executing the branch 18-support-various-dem-as-input, there is a error when from s1tiling.libs import exceptions in S1FileManager.py line 59, because exceptions.py doesn't exists in this branch.

(s1tiling-copdem) [koleckt@trex017 Brazil]$ S1Processor  /home/il/koleckt/tropisco/preprocess/Brazil/Brazil.cfg
Traceback (most recent call last):
  File "/work/scratch/env/koleckt/.conda/envs/s1tiling-copdem/bin/S1Processor", line 33, in <module>
    sys.exit(load_entry_point('S1Tiling', 'console_scripts', 'S1Processor')())
  File "/work/scratch/env/koleckt/.conda/envs/s1tiling-copdem/bin/S1Processor", line 25, in importlib_load_entry_point
    return next(matches).load()
  File "/work/scratch/env/koleckt/.conda/envs/s1tiling-copdem/lib/python3.8/importlib/metadata.py", line 77, in load
    module = import_module(match.group('module'))
  File "/work/scratch/env/koleckt/.conda/envs/s1tiling-copdem/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 783, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/il/koleckt/s1tiling-copdem/s1tiling/s1tiling/S1Processor.py", line 68, in <module>
    from s1tiling.libs.S1FileManager import S1FileManager, WorkspaceKinds
  File "/home/il/koleckt/s1tiling-copdem/s1tiling/s1tiling/libs/S1FileManager.py", line 59, in <module>
    from s1tiling.libs import exceptions
ImportError: cannot import name 'exceptions' from 's1tiling.libs' (/home/il/koleckt/s1tiling-copdem/s1tiling/s1tiling/libs/__init__.py)