Django-import-export library - No such file or directory: '/tmp/tmp5bcxsx9p'

Question

I have a problem with the django-import-export library because when I try to import excel or csv files it gives me error 500, and the error returned is the following

FileNotFoundError [Errno 2] No such file or directory: '/tmp/tmp5bcxsx9p'

and the error comes from django-import-export library in the file import_export/tmp_storages.py in _open()

    def _open(self, mode="r"):

        if self.name:

            return open(self.get_full_path(), mode, encoding=self.encoding) <----

        else:

            tmp_file = tempfile.NamedTemporaryFile(delete=False)

            self.name = tmp_file.name

            return tmp_file

this is the code in the Django admin of the model that im trying to import info

class ProductForeignKeyWidget(ForeignKeyWidget):
    def get_queryset(self, value, row, *args, **kwargs):
        qs = super().get_queryset(value, row, *args, **kwargs)
        return qs.filter(shop__tpc_shop=int(row['ID TIENDA']), sku=row['SKU'].upper().strip())


class StockResource(resources.ModelResource):
    shop = Field(
        column_name='ID TIENDA',
        attribute='shop',
        widget=ForeignKeyWidget(Shop, 'tpc_shop')
    )

    product = Field(
        column_name='SKU',
        attribute='product',
        widget=ProductForeignKeyWidget(Product, 'sku')
    )

    units = Field(
        column_name='UNIDADES',
        attribute='units',
        widget=IntegerWidget(),
        default=0,
    )

    threshold_units = Field(
        column_name='UMBRAL',
        attribute='threshold_units',
        widget=IntegerWidget(),
        default=10,
    )

    location = Field(
        column_name='LOCALIZACION',
        attribute='location',
        widget=OurCharWidget(),
        default='No location',
    )

    @classmethod
    def get_error_result_class(self):
        """
        Returns the class used to store an error resulting from an import.
        """
        return SimpleError

    class Meta:
        model = Stock
        use_transactions = True
        skip_unchanged = True
        report_skipped = True
        import_id_fields = ('product',)
        fields = ('id', 'units', 'threshold_units', 'location')

    def before_import_row(self, row, row_number=None, **kwargs):
        row['SKU'] = str(row['SKU']).strip()

        try:
            shop = Shop.objects.get(tpc_shop=int(row['ID TIENDA']))
            product = Product.objects.get(shop=shop, sku=row['SKU'])
            stock = product.stock
            old_units = stock.units
        except Product.DoesNotExist:
            old_units = 0
        except Stock.DoesNotExist:
            old_units = 0

        new_units = int(row.get('UNIDADES', 0)) + old_units

        row['UNIDADES'] = new_units

        super().before_import_row(row, row_number=row_number, **kwargs)

    def skip_row(self, instance, original, row, import_validation_errors=None):
        if not instance.product:
            return True


@admin.register(Stock)
class StockAdmin(ImportMixin, SimpleHistoryAdmin):
    list_display = (
        'id', 'tienda', linkify('product'), 'units',
        'reserved_units', 'updated_at'
    )
    raw_id_fields = ('product',)
    readonly_fields = ('units_sold', 'created_at', 'updated_at')
    search_fields = ('product__sku',)
    list_filter = ('product__shop__name',)
    ordering = ('-updated_at',)
    resource_class = StockResource
    actions = [download_stock_template, remove_reserved_units, remove_all_units]

    download_stock_template.short_description = 'Descargar plantilla de stock'

    def tienda(self, obj):
        return obj.product.shop

    def get_queryset(self, request):
        qs = super().get_queryset(request)
        qs = qs.select_related('product__shop')
        return qs

Does anyone know how I can permanently solve it? That mistake makes me tired

I tried to use CacheStorage but it doesn't work either. I don't understand why this error occurs. Sometimes it is solved when I delete the browser cookies and try to import, but it is not a definitive solution because the error appears again