An invalid file type error occurred when uploading a file in the panel

The CMS Questions
1

Hi. I am Sally.

I want to upload a PDF file to the panel.
Not all PDF files are uploaded, but some files are uploaded and some are not.
Neither the mime type issue nor the file size issue was the cause.

/site/blueprints/files Inside there are default.yml, document.yml, image.yml, and video.yml files.

default.yml

# Each file blueprint must have a title, the title may be different from the file name
title: Image

# Like page blueprints, file blueprints can define a layout with tabs, columns, sections and fields
# File blueprints define what sort of information should get stored in a file's meta data file
# In addition to the fields defined in this example blueprint, you can also set what type of file is acceptable
# when this blueprint is used, which allows you to control what users can upload.
# More about file blueprints: https://getkirby.com/docs/reference/panel/blueprints/file

accept: 
  type: image

columns:
  - width: 1/1
    sections:
      content:
        type: fields
        fields:
          caption:
            label: Caption
            type: textarea
            size: medium
  - width: 1/2
    sections:
      meta:
        type: fields
        fields:
          alt:
            label: Alternative Text
            type: text
          photographer:
            label: Photographer
            type: text
            width: 2/3
          license:
            label: License
            type: select
            width: 1/3
            options:
              - Unsplash
              - CC BY 4.0
              - CC BY-SA 4.0
              - CC BY-NC 4.0
              - CC BY-ND 4.0
          link:
            label: Link
            type: url

document.yml

title: Document

accept:
  mime: application/pdf, application/msword, application/vnd.openxmlformats-officedocument.wordprocessingml.document, application/vnd.ms-excel, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

fields:
  alt:
    label: 설명
    type: text
  caption:
    label: 캡션
    type: textarea
    size: medium

image.yml

# Each file blueprint must have a title, the title may be different from the file name
title: Image

# Like page blueprints, file blueprints can define a layout with tabs, columns, sections and fields
# File blueprints define what sort of information should get stored in a file's meta data file
# In addition to the fields defined in this example blueprint, you can also set what type of file is acceptable
# when this blueprint is used, which allows you to control what users can upload.
# More about file blueprints: https://getkirby.com/docs/reference/panel/blueprints/file

accept: 
  type: image

columns:
  - width: 1/2
    sections:
      content:
        type: fields
        fields:
          caption:
            label: Caption
            type: textarea
            size: medium
  - width: 1/2
    sections:
      meta:
        type: fields
        fields:
          alt:
            label: Alternative Text
            type: text
          photographer:
            label: Photographer
            type: text
            width: 2/3
          license:
            label: License
            type: select
            width: 1/3
            options:
              - Unsplash
              - CC BY 4.0
              - CC BY-SA 4.0
              - CC BY-NC 4.0
              - CC BY-ND 4.0
          link:
            label: Link
            type: url

video.yml

title: Video

accept:
  extension: mp4, webm, mov

I am so frustrated because I don’t know the cause, so I am asking for your help.

PDF file that was successfully uploaded: success_file
PDF file that failed to be uploaded: faile_file
I am attaching an example.

Please help me. :sob: