Bmp format conversion error

[icret]

I want to convert the bmp image to webp, but no matter what format is converted, it will display: Bmp format conversion error. upload log:

- class version : 30\/08\/2022
- operating system : WINNT
- PHP version : 7.3.4
- GD version : 2.1.0
- supported image types : png webp jpg gif bmp
- open_basedir : no restriction
- upload_max_filesize : 100M (104857600 bytes)
- language : en
source is an uploaded file
- upload OK
- file name OK
determining MIME type
- checking MIME type with Fileinfo PECL extension
    MAGIC path defaults to C:\\phpstudy_pro\\Extensions\\php\\php7.3.4nts\/extras\/magic
    MAGIC path will not be used
    MIME type detected as image\/x-ms-bmp; charset=binary by Fileinfo PECL extension
- MIME validated as image\/x-ms-bmp
- file is an image, and its type is supported by GD
source variables
- you can use all these before calling process()
    file_src_name : 20230105211232.bmp
    file_src_name_body : 20230105211232
    file_src_name_ext : bmp
    file_src_pathname : C:\\Users\\Administrator\\AppData\\Local\\Temp\\php3EC6.tmp
    file_src_mime : image\/x-ms-bmp
    file_src_size : 8048694 (max= 104857600)
    file_src_error : 0
- source file is an image
    image_src_x : 1920
    image_src_y : 1048
    image_src_pixels : 2012160
    image_src_type : bmp
    image_src_bits : 32
process file to C:\/phpstudy_pro\/WWW\/i\/2023\/01\/05\/\\
- file size OK
- file mime OK : image\/x-ms-bmp
- file extension OK : bmp
- new file name ext : webp
- new file name body : 10ma3w2
- file name safe format
- destination variables
    file_dst_path : C:\/phpstudy_pro\/WWW\/i\/2023\/01\/05\/\\
    file_dst_name_body : 10ma3w2
    file_dst_name_ext : webp
- checking for auto_rename
- destination file details
    file_dst_name : 10ma3w2.webp
    file_dst_pathname : C:\/phpstudy_pro\/WWW\/i\/2023\/01\/05\/\\10ma3w2.webp
- 10ma3w2.webp doesn't exist already
- auto-rotate requires function exif_read_data to be enabled
- image resizing or conversion wanted
- error: Error in creating BMP image from source.```

This is the same phenomenon under IIS, including debian 10 x64 php 7.4 + Nginx 

[verot]

Not sure what is going on... You can try to remove the @ before the calls to @$this->imagecreatefrombmp() in order to see more errors.

Note that I don't really support the class on Windows. I ran some tests on debian PHP 7.4, and it could load BMP files fine.

[icret]

Not sure what is going on... You can try to remove the @ before the calls to @$this->imagecreatefrombmp() in order to see more errors.

Note that I don't really support the class on Windows. I ran some tests on debian PHP 7.4, and it could load BMP files fine.

I removed @, but did not get any more error information. I ran some tests on debian PHP 7.4.

[icret]

I try to rebuild the environment and try to use the latest version to give feedback.