Fatal error:

Have you tried looking at that function is_rtl()? It does kind of give you a hint that it has nothing to do with the plugin. It’s in the themes folder.

Below is the function that has a conflict this only conflicts with this plugin no others, I am not a developer so nothing looks wrong to me as I dont know what is_rtl() means

function genesis_register_default_widget_areas() {

genesis_register_sidebar(
array(
‘id’ => ‘header-right’,
‘name’ => is_rtl() ? __( ‘Header Left’, ‘genesis’ ) : __( ‘Header Right’, ‘genesis’ ),
‘description’ => __( ‘This is the widget area in the header.’, ‘genesis’ ),
‘_genesis_builtin’ => true,
)
);