The app certificates directory was renamed to tls in e2135a2c5f

plugins/nginx-vhosts/backup-export

@@ -4,4 +4,4 @@ shopt -s nullglob
 VERSION="$1"
 BASE_DIR="$2"
 
-cat; for i in $BASE_DIR/*/ssl/server.*; do echo $i; done
+cat; for i in $BASE_DIR/*/tls/server.*; do echo $i; done

plugins/nginx-vhosts/backup-import

@@ -7,7 +7,7 @@ TARGET_DIR="$3"
 
 cd $IMPORT_DIR
 
-for file in */ssl/server.*; do
+for file in */tls/server.*; do
     mkdir -p $(dirname $TARGET_DIR$file)
     cp $file $TARGET_DIR$file
 done