Fixed a rare bug with locals() being changed during iteration

src/pyrmv/raw/journey_detail.py

@@ -55,7 +55,7 @@ def journey_detail(
     payload = {}
     headers = {"Accept": "application/json"} if json else {"Accept": "application/xml"}
 
-    for var, val in locals().items():
+    for var, val in locals().copy().items():
         if str(var) == "rtMode":
             if val != None:
                 payload["rtMode"] = val.upper()