Error whilst compiling to .exe

230 INFO: PyInstaller: 3.5
230 INFO: Python: 3.8.0
231 INFO: Platform: Windows-10-10.0.18362-SP0
233 INFO: wrote C:\Users\avr\Desktop\mathProject.spec
235 INFO: UPX is not available.
245 INFO: Extending PYTHONPATH with paths
['C:\\Users\\avr\\Desktop', 'C:\\Users\\avr\\Desktop']
245 INFO: checking Analysis
314 INFO: checking PYZ
314 INFO: Building PYZ because PYZ-00.toc is non existent
314 INFO: Building PYZ (ZlibArchive) C:\Users\avr\Desktop\build\mathProject\PYZ-00.pyz
Traceback (most recent call last):
  File "c:\users\avr\appdata\local\programs\python\python38\lib\runpy.py", line 192, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "c:\users\avr\appdata\local\programs\python\python38\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "C:\Users\avr\AppData\Local\Programs\Python\Python38\Scripts\pyinstaller.exe\__main__.py", line 9, in <module>
  File "c:\users\avr\appdata\local\programs\python\python38\lib\site-packages\PyInstaller\__main__.py", line 111, in run
    run_build(pyi_config, spec_file, **vars(args))
  File "c:\users\avr\appdata\local\programs\python\python38\lib\site-packages\PyInstaller\__main__.py", line 63, in run_build
    PyInstaller.building.build_main.main(pyi_config, spec_file, **kwargs)
  File "c:\users\avr\appdata\local\programs\python\python38\lib\site-packages\PyInstaller\building\build_main.py", line 844, in main
    build(specfile, kw.get('distpath'), kw.get('workpath'), kw.get('clean_build'))
  File "c:\users\avr\appdata\local\programs\python\python38\lib\site-packages\PyInstaller\building\build_main.py", line 791, in build
    exec(code, spec_namespace)
  File "C:\Users\avr\Desktop\mathProject.spec", line 18, in <module>
    pyz = PYZ(a.pure, a.zipped_data,
  File "c:\users\avr\appdata\local\programs\python\python38\lib\site-packages\PyInstaller\building\api.py", line 98, in __init__
    self.__postinit__()
  File "c:\users\avr\appdata\local\programs\python\python38\lib\site-packages\PyInstaller\building\datastruct.py", line 158, in __postinit__
    self.assemble()
  File "c:\users\avr\appdata\local\programs\python\python38\lib\site-packages\PyInstaller\building\api.py", line 128, in assemble
    self.code_dict = {
  File "c:\users\avr\appdata\local\programs\python\python38\lib\site-packages\PyInstaller\building\api.py", line 129, in <dictcomp>
    key: strip_paths_in_code(code)
  File "c:\users\avr\appdata\local\programs\python\python38\lib\site-packages\PyInstaller\building\utils.py", line 652, in strip_paths_in_code
    consts = tuple(
  File "c:\users\avr\appdata\local\programs\python\python38\lib\site-packages\PyInstaller\building\utils.py", line 653, in <genexpr>
    strip_paths_in_code(const_co, new_filename)
  File "c:\users\avr\appdata\local\programs\python\python38\lib\site-packages\PyInstaller\building\utils.py", line 660, in strip_paths_in_code
    return code_func(co.co_argcount, co.co_kwonlyargcount, co.co_nlocals, co.co_stacksize,
TypeError: an integer is required (got type bytes)