Do not use vibe default main but instead use an own main function.

dub.json

@@ -14,10 +14,7 @@
 	"targetPath": "generated",
 	"configurations": [
 		{
-			"name": "executable",
-			"versions": [
-				"VibeDefaultMain"
-			]
+			"name": "executable"
 		},
 		{
 			"name": "unittest",

source/calendarwebapp/app.d

@@ -5,6 +5,7 @@ import calendarwebapp.configuration : Context;
 
 import poodinis;
 
+import vibe.core.core : runApplication;
 import vibe.core.log : logInfo;
 
 import vibe.http.fileserver : serveStaticFiles;
@@ -12,7 +13,7 @@ import vibe.http.router : URLRouter;
 import vibe.http.server : HTTPServerSettings, listenHTTP, MemorySessionStore;
 import vibe.web.web : registerWebInterface;
 
-shared static this()
+void main()
 {
     auto container = new shared DependencyContainer();
     container.registerContext!Context;
@@ -26,6 +27,5 @@ shared static this()
     settings.bindAddresses = ["::1", "127.0.0.1"];
     settings.sessionStore = new MemorySessionStore;
     listenHTTP(settings, router);
-
-    logInfo("Please open http://127.0.0.1:8080/ in your browser.");
+    runApplication();
 }