diff --git a/api/auth.ts b/api/auth.ts
index d211383..8ac5af0 100644
--- a/api/auth.ts
+++ b/api/auth.ts
@@ -102,6 +102,7 @@ export const withAuth = (): MiddlewareHandler<
     if (
       !isAllowed(namespace, payload)
     ) {
+      console.warn(`${credentials} is invalid`);
       const res = new Response("Forbbiden", {
         status: 403,
         headers: {
@@ -121,6 +122,7 @@ export const withAuth = (): MiddlewareHandler<
       url.search = "";
       const atLeastOneIsAllowed = scopes.some((scope) => scope.test(url));
       if (!atLeastOneIsAllowed) {
+        console.warn(`${credentials} scope not allowed.`);
         const res = new Response("Forbbiden", {
           status: 403,
           headers: {
diff --git a/api/router.ts b/api/router.ts
index 28213a7..88c9159 100644
--- a/api/router.ts
+++ b/api/router.ts
@@ -47,6 +47,7 @@ export const getRouter = async (
     const { id } = req.param();
     const execution = await service.getExecution(id);
     if (execution === undefined) {
+      console.error("execution not found", id);
       return Response.json({}, { status: 403 }); // do not expose not found errors.
     }
     return Response.json(execution);
@@ -55,6 +56,7 @@ export const getRouter = async (
     const { id } = req.param();
     const execution = await service.getExecution(id);
     if (execution === undefined) {
+      console.error("execution not found", id);
       return Response.json({}, { status: 403 }); // do not expose not found errors.
     }
     await service.touchExecution(id);
@@ -75,6 +77,7 @@ export const getRouter = async (
       pageSize ? +pageSize : 10,
     );
     if (history === undefined) {
+      console.error("execution not found", id);
       return Response.json({}, { status: 403 }); // do not expose not found errors.
     }
     return Response.json(history);