Django Admin Returning Error message without highlighting errors

My Django Admin is returning the error: “Please correct the errors below.” without highlighting any errors in the admin page, even the HTTP response returns with HTTP 200, but data are not updated.

My Admin Code is as so

class UserAccessInLine(admin.StackedInline):
    model = UserAccess
    can_delete = False
    verbose_name = 'User Access'
    fields = (('unique_user_id', 'access_level', 'access_status'), 'profile_pic')
    readonly_fields = ('unique_user_id',)

class UserAdmin(BaseUserAdmin):
    add_fieldsets = (
        (None, {
            'classes': ('wide',),
            'fields': ('username', 'password1', 'password2', 
                       'first_name', 'last_name'),
    inlines = [UserAccessInLine]
    list_display = ['username', 'first_name', 'last_name', 'get_access_status', 'get_unique_user_id']
    ordering = ['username']

    @admin.display(description='Access Role', ordering='username')
    def get_access_status(self, obj):
        return obj.useraccess.access_status

    @admin.display(description='User ID', ordering='username')
    def get_unique_user_id(self, obj):
        return obj.useraccess.unique_user_id, UserAdmin)

I get this on an “edit”, but not an “add”.

It appears that this is trying to add a new UserAccess instance rather than editing the current one. There’s also apparently a required field that isn’t being shown on the edit.

(If you look at the context being rendered by the Admin template, those are the error messages being generated but not being shown.)

What does your UserAccess class currently look like?