Index: server/authjs-handler.ts
===================================================================
--- server/authjs-handler.ts	(revision be22289d1b599049be201869aad6fd0aa51ebd42)
+++ server/authjs-handler.ts	(revision 4f2900a42af738556efd5fd79be1f104639d6108)
@@ -29,9 +29,11 @@
 
         if(!username || !password || typeof username !== 'string' || typeof password !== 'string') { return null; }
+        
+        const trimmedUsername = username.trim();
 
         const user = await db.query.usersTable.findFirst({
             where: or(
-                eq(usersTable.username, username),
-                eq(usersTable.email, username)
+                eq(usersTable.username, trimmedUsername),
+                eq(usersTable.email, trimmedUsername)
             ),
           });