HTTP Errors while uploading images

Unable to upload media files while uploading

There are some below solutions to overcome this error

a) Decrease the image’s size. Don’t add a 2000 x 1500 image, for example. If your post content area is 700px wide, don’t add an image larger than that.

b) Change the image’s extension from .png to .jpg, or vice versa, then upload it again.

c) Increase your PHP memory. Add this code

<?php
define('WP_MEMORY_LIMIT', '64M')
?>

into your wp-config.php file.

d) Add one of these codes in .htaccess:

<IfModule mod_security.c> SecFilterEngine Off SecFilterScanPOST Off </IfModule>

https://themeskills.com/fix-http-error-when-uploading-images-to-wordpress/