Conflict with NextGen Gallery

When NextGen is installed, I get the following error for Olevmedia, when trying to install and activate it:

Fatal error: Cannot redeclare file_get_html() (previously declared in /data/www/html/devtest/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/simplehtmldom/simplehtmldom/simple_html_dom.php:71) in /data/www/html/devtest/wp-content/plugins/olevmedia-shortcodes/libraries/simple_html_dom.php on line 85

I am running NextGen 2.0.40

https://www.ads-software.com/plugins/olevmedia-shortcodes/