diff --git a/packages/runtime-handler/src/dev-runtime/internal/functionRunner.ts b/packages/runtime-handler/src/dev-runtime/internal/functionRunner.ts
index d54a0f86..e1979fcc 100644
--- a/packages/runtime-handler/src/dev-runtime/internal/functionRunner.ts
+++ b/packages/runtime-handler/src/dev-runtime/internal/functionRunner.ts
@@ -70,7 +70,7 @@ process.on('uncaughtException', (err, origin) => {
 
 process.on(
   'message',
-  ({ functionPath, event, config, path }: FunctionRunnerOptions) => {
+  async ({ functionPath, event, config, path }: FunctionRunnerOptions) => {
     try {
       setRoutes(config.routes);
       constructGlobalScope(config);
@@ -110,7 +110,11 @@ process.on(
           `Could not find a "handler" function in file ${functionPath}`
         );
       }
-      handler(context, event, callback);
+      if (handler.constructor.name === 'AsyncFunction') {
+        await handler(context, event, callback);
+      } else {
+        handler(context, event, callback);
+      }
     } catch (err) {
       if (process.send) {
         process.send({ err: serializeError(err) });
diff --git a/packages/runtime-handler/src/dev-runtime/route.ts b/packages/runtime-handler/src/dev-runtime/route.ts
index 4dfdad31..76a122db 100644
--- a/packages/runtime-handler/src/dev-runtime/route.ts
+++ b/packages/runtime-handler/src/dev-runtime/route.ts
@@ -157,13 +157,13 @@ export function constructContext<T extends {} = {}>(
 }> {
   function getTwilioClient(opts?: TwilioClientOptions): TwilioClient {
     checkForValidAccountSid(env.ACCOUNT_SID, {
-      shouldPrintMessage: true,
+      shouldPrintMessage: logger ? !!logger.error : false,
       shouldThrowError: true,
       functionName: 'context.getTwilioClient()',
       logger: logger,
     });
     checkForValidAuthToken(env.AUTH_TOKEN, {
-      shouldPrintMessage: true,
+      shouldPrintMessage: logger ? !!logger.error : false,
       shouldThrowError: true,
       functionName: 'context.getTwilioClient()',
       logger: logger,
@@ -221,12 +221,13 @@ export function handleError(
   err: Error | string | object,
   req: ExpressRequest,
   res: ExpressResponse,
-  functionFilePath?: string
+  functionFilePath?: string,
+  logger?: LoggerInstance
 ) {
   res.status(500);
   if (isError(err)) {
     const cleanedupError = cleanUpStackTrace(err);
-
+    logger?.error(cleanedupError.toString());
     if (req.useragent && (req.useragent.isDesktop || req.useragent.isMobile)) {
       res.type('text/html');
       res.send(wrapErrorInHtml(cleanedupError, functionFilePath));
@@ -334,7 +335,7 @@ export function functionPathToRoute(
 
         if (err) {
           const error = deserializeError(err);
-          handleError(error, req, res, functionPath);
+          handleError(error, req, res, functionPath, config.logger);
         }
 
         if (reply) {