diff --git a/.env.defaults b/.env.defaults
index 661e585..ea98216 100644
--- a/.env.defaults
+++ b/.env.defaults
@@ -1,4 +1,4 @@
 PORT = 8000
 GRAB_SYMLINKS = true
-SYMLINKS_DIR = "symlinks"
+SYMLINK_DIR = "symlinks"
 STATIC_SHARE_RESTRICTION = true
\ No newline at end of file
diff --git a/serve.py b/serve.py
index 83f50fe..8ddf373 100644
--- a/serve.py
+++ b/serve.py
@@ -56,6 +56,8 @@ class CustomHandler(http.server.SimpleHTTPRequestHandler):
             project_id = parts[0]
             project_dir = get_project_directory(project_id)
 
+            if not project_dir:
+                return os.path.join(BASE_DIR, "404.html")
             # Check .staticshare restriction
             if STATIC_SHARE_RESTRICTION:
                 staticshare_path = os.path.join(project_dir, ".staticshare")
@@ -88,6 +90,14 @@ class CustomHandler(http.server.SimpleHTTPRequestHandler):
 
             project_dir = get_project_directory(project_id)
 
+            if not project_dir:
+                self.send_response(404)
+                self.send_header("Content-type", "text/html")
+                self.end_headers()
+                with open(os.path.join(BASE_DIR, "404.html"), "rb") as f:
+                    self.wfile.write(f.read())
+                return
+
             if STATIC_SHARE_RESTRICTION:
                 staticshare_path = os.path.join(project_dir, ".staticshare")
                 if not os.path.isfile(staticshare_path):