It may be that since WordPress 5.3, WordPress program has built-in function to adjust and cut pictures, which leads to some error prompts or incompatibility when we upload pictures. For example, some netizens mentioned that “image post-processing failed” when uploading pictures. If this is a photo or a larger image, please reduce it to 2500 pixels and upload it again. How to solve the problem?
Here, we can use the “disable” big image “threshold” plugin, or directly use the script to solve the problem
add_ filter( ‘big_ image_ size_ threshold’, ‘__ return_ false’ );
Here we try to see if it can be solved. Because some netizens have similar problems when using plugins such as wpcos or wposs, but this problem has been dealt with on plugins before.