Nested inlines FileField upload broken – field omitted on save

[SpirikStar]

What version of Unfold are you using?

0.87.0

What version of Django are you using?

6.0.3

What browser are you using?

For example: Firefox 148.0

Did you checked changelog/commit history, if the bug is not already fixed?

For example: Yes

Did you searched other issues, if the bug is not already fixed?

For example: No

Did you checked documentation?

Yes.

Are you able to replicate the bug in the demo site?

No.

Repository with reproduced bug

Create minimal repository where it is possible to reproduce an error.

Describe your issue
I use nested inlines. The problem arises because when I try to upload a file, the file name itself appears in the display name, but when saving, it writes an error (the field is omitted). I've redefined the problem in a new project, but it hasn't been resolved.

#admin.py
from django.contrib import admin
from unfold.admin import ModelAdmin, StackedInline, TabularInline
from appUpload import models as models_upload


class FileInline(TabularInline):
    model = models_upload.File
    extra = 0

class ItemInline(StackedInline):
    model = models_upload.Item
    inlines = [FileInline]

    tab = True
    extra = 0

@admin.register(models_upload.Root)
class Root(ModelAdmin):
    inlines = [ItemInline]

#models.py
from django.db import models

class Root(models.Model):
    name = models.CharField()
    created_at = models.DateTimeField(auto_now_add=True)

class Item(models.Model):
    name = models.CharField()
    status = models.BooleanField()
    root = models.ForeignKey(Root, on_delete=models.CASCADE)

class File(models.Model):
    name = models.CharField()
    file = models.FileField()
    item = models.ForeignKey(Item, on_delete=models.CASCADE)

[hernansaa]

Hola! I have been using unfold admin for a while, I can try to help if you want. I don't fully undertstand the problem, you said you have a repo where we can reproduce de error? I am more than happy to take a look at it.