This fixed it:
add_filter( ‘wp_image_editors’, ‘change_graphic_lib’ );
function change_graphic_lib($array) {
return array( ‘WP_Image_Editor_GD’, ‘WP_Image_Editor_Imagick’ );
}
found here:https://wordpress.org/support/topic/http-error-when-uploading-images-17/
I have the same problem. Do you remember how you fixed it? I have increased the memory_limit to 512mb