get() keywords must be strings - python-3.x

Question

I can't tell what is the problem, and where the problem is. I was able to upload files through django import export but now I am not able to do so. Here is my Traceback.
Traceback (most recent call last):
File "C:\Users\FR GULIK\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
response = get_response(request)
File "C:\Users\FR GULIK\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\handlers\base.py", line 181, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\FR GULIK\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\views\generic\base.py", line 70, in view
return self.dispatch(request, *args, **kwargs)
File "C:\Users\FR GULIK\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\contrib\auth\mixins.py", line 52, in dispatch
return super().dispatch(request, *args, **kwargs)
File "C:\Users\FR GULIK\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\views\generic\base.py", line 98, in dispatch
return handler(request, *args, **kwargs)
File "D:\Python\Django\test projects\library manage\lib_system\Library-System\libman\import_export_views.py", line 227, in post
result = resource.import_data(data_set, dry_run=True, collect_failed_rows=True, raise_errors=True)
File "C:\Users\FR GULIK\AppData\Local\Programs\Python\Python38-32\lib\site-packages\import_export\resources.py", line 741, in import_data
return self.import_data_inner(dataset, dry_run, raise_errors, using_transactions, collect_failed_rows, **kwargs)
File "C:\Users\FR GULIK\AppData\Local\Programs\Python\Python38-32\lib\site-packages\import_export\resources.py", line 788, in import_data_inner
raise row_result.errors[-1].error
File "C:\Users\FR GULIK\AppData\Local\Programs\Python\Python38-32\lib\site-packages\import_export\resources.py", line 635, in import_row
instance, new = self.get_or_init_instance(instance_loader, row)
File "C:\Users\FR GULIK\AppData\Local\Programs\Python\Python38-32\lib\site-packages\import_export\resources.py", line 330, in get_or_init_instance
instance = self.get_instance(instance_loader, row)
File "C:\Users\FR GULIK\AppData\Local\Programs\Python\Python38-32\lib\site-packages\import_export\resources.py", line 323, in get_instance
return instance_loader.get_instance(row)
File "C:\Users\FR GULIK\AppData\Local\Programs\Python\Python38-32\lib\site-packages\import_export\instance_loaders.py", line 31, in get_instance
return self.get_queryset().get(**params)
TypeError: get() keywords must be strings
This si the resource file
class ImportBooksResource(resources.ModelResource):
def __init__(self, school_id,*args,**kwargs):
super(ImportBooksResource,self).__init__()
self.school_id = school_id
self.fields["id"] = fields.Field(widget=ForeignKeyWidget(Books,'id'))
self.fields['department'] = fields.Field(widget=ForeignKeyWidget(Departments, 'name'))
def before_save_instance(self, instance, using_transactions, dry_run):
instance.school_id = self.school_id
def before_import_row(self, row, **kwargs):
row['department'] = row['department'].lower()
class Meta:
model = Books
fields = ('reg_no','book_name','book_detail','department')
import_id_fields = ('id',)
import_order = ('reg_no','book_name','book_detail','department')

Answer 1

This line looks wrong:
self.fields["id"] = fields.Field(widget=ForeignKeyWidget(Books,'id'))
Remove this line and it should work.
Reason: You are declaring a field on a ModelResource subclass for Books, which points says that there is a FK relation to Books. There shouldn't be an FK relationship to Books from Books. You don't need to declare the id field because you are using ModelResource, hence the field should be available implicitly.