conflict

i use this function to optimize performance – Remove query strings from static resources on my blog. unfortnately there is a conflict with calendar.
any idea why?

function _remove_script_version( $src ){
	$parts = explode( '?', $src );
	return $parts[0];
}
add_filter( 'script_loader_src', '_remove_script_version', 15, 1 );
add_filter( 'style_loader_src', '_remove_script_version', 15, 1 );
add_filter( 'jetpack_enable_opengraph', '__return_false', 99 );

https://www.ads-software.com/extend/plugins/all-in-one-event-calendar/