TabError: inconsistent use of tabs and spaces in indentation

[User1505]

Traceback (most recent call last):
File "/root/iSniff-GPS/./manage.py", line 10, in
execute_from_command_line(sys.argv)
File "/root/.env/lib/python3.9/site-packages/django/core/management/init.py", line 354, in execute_from_command_line
utility.execute()
File "/root/.env/lib/python3.9/site-packages/django/core/management/init.py", line 328, in execute
django.setup()
File "/root/.env/lib/python3.9/site-packages/django/init.py", line 18, in setup
apps.populate(settings.INSTALLED_APPS)
File "/root/.env/lib/python3.9/site-packages/django/apps/registry.py", line 108, in populate
app_config.import_models(all_models)
File "/root/.env/lib/python3.9/site-packages/django/apps/config.py", line 198, in import_models
self.models_module = import_module(models_module_name)
File "/usr/lib/python3.9/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1030, in _gcd_import
File "", line 1007, in _find_and_load
File "", line 986, in _find_and_load_unlocked
File "", line 680, in _load_unlocked
File "", line 786, in exec_module
File "", line 923, in get_code
File "", line 853, in source_to_code
File "", line 228, in _call_with_frames_removed
File "/root/iSniff-GPS/iSniff_GPS/models.py", line 30
if self.BSSID:
TabError: inconsistent use of tabs and spaces in indentation