Index: ChapterX.API/Program.cs
===================================================================
--- ChapterX.API/Program.cs	(revision b373fea3e2c9d404606002f8e7ba265a82d68187)
+++ ChapterX.API/Program.cs	(revision 0b502c2664f4d6c64626f3394b4f1dc540e0aa9b)
@@ -9,5 +9,5 @@
 
 var jwtKey = builder.Configuration["Jwt:Key"];
-if (string.IsNullOrWhiteSpace(jwtKey) || jwtKey.StartsWith("change-this"))
+if (string.IsNullOrWhiteSpace(jwtKey))
     throw new InvalidOperationException("Jwt:Key is not configured. Set it via environment variable DOTNET_Jwt__Key before starting the application.");
 
@@ -17,5 +17,6 @@
         policy.WithOrigins("http://localhost:5173", "https://localhost:5173")
               .AllowAnyHeader()
-              .AllowAnyMethod());
+              .AllowAnyMethod()
+              .AllowCredentials());
 });