fix: prevent whitespace in printout filename

src/helpers/newsletterHelper.ts

@@ -140,10 +140,13 @@ export abstract class NewsletterHelper {
       }
     }
 
+    if (queryMemberIds.length == 0) {
+      return [];
+    } else {
       let members = await MemberService.getAll({ noLimit: true, ids: queryMemberIds });
-
       return members[0];
     }
+  }
 
   public static getICSFilePath(newsletter: newsletter) {
     return FileSystemHelper.formatPath(
@@ -265,7 +268,7 @@ export abstract class NewsletterHelper {
       await PdfExport.renderFile({
         template: "newsletter",
         title: `Newsletter von ${CLUB_NAME}`,
-        filename: `${rec.lastname}_${rec.firstname}_${rec.id}`,
+        filename: `${rec.lastname}_${rec.firstname}_${rec.id}`.replace(" ", "-"),
         folder: `newsletter/${newsletter.id}_${newsletter.title.replace(" ", "")}`,
         data: data,
       })