Fixing lambda.

src/server/db.scm

@@ -14,7 +14,7 @@
   (when (not (file-exists? *db*))
     (call-with-output-file *db*
       (lambda (output-port)
-        ;; Empty body, no content to write to the file
+        ""
         )))
   (with-db (db)
     (exec (sql db "create table if not exists users(id INTEGER PRIMARY KEY, username TEXT, email TEXT, password TEXT, salt TEXT);"))