It appears that there is no prefix list mapping for eu-north in the template and therefore Cloudformation fails to run the build with the error described in the title.
"PrefixListIdMap" : {
"ap-south-1" : { "s3" : "pl-78a54011" },
"eu-west-1" : { "s3" : "pl-6da54004" },
"eu-west-2" : { "s3" : "pl-7ca54015" },
"eu-west-3" : { "s3" : " pl-23ad484a " },
"ap-southeast-1" : { "s3" : "pl-6fa54006" },
"ap-southeast-2" : { "s3" : "pl-6ca54005" },
"eu-central-1" : { "s3" : "pl-6ea54007" },
"ap-northeast-2" : { "s3" : "pl-78a54011" },
"ap-northeast-1" : { "s3" : "pl-61a54008" },
"us-east-1" : { "s3" : "pl-63a5400a" },
"us-east-2" : { "s3" : "pl-7ba54012" },
"sa-east-1" : { "s3" : "pl-6aa54003" },
"us-west-1" : { "s3" : "pl-6ba54002" },
"us-west-2" : { "s3" : "pl-68a54001" },
"ca-central-1" : { "s3" : "pl-7da54014" },
"sa-east-1" : { "s3" : "pl-6aa54003" }
}