( ! ) Fatal error: Interface 'Swift_KeyCache_KeyCacheInputStream' not found in /var/www/clients/client0/web4/web/vendor/swiftmailer/swiftmailer/lib/classes/Swift/KeyCache/SimpleKeyCacheInputStream.php on line 16
Call Stack
#	Time	Memory	Function	Location
1	0.0003	361776	{main}( )	.../SimpleKeyCacheInputStream.php:0