Error.md

Some error

• socket can't send any data after mongo updated
• client can't save token

Solved Problem

Send image file:

• Input

<input
    accept="image/*"
    multiple
    type="file"
    alt="image"
    style={{ display: 'none' }}
    id={id}
    onChange={onChange}
/>

• Client Handle: e.target.files or e.target.file

• Send by axios. Create new FormData() and append all of images with the same field name .

• Server Handle: receive by multer. The field name of upload.array("field name") must be alike of client's

• Read file from path -> store by cloudinary -> get url and remove file from this path -> send url back to client to display