Fix "Runtime Error: Dictionary size changed during iteration" // Resolve #2003

platformio/telemetry.py

@@ -388,7 +388,7 @@ def backup_reports(items):
 
     for params in items:
         # skip static options
-        for key in params:
+        for key in params.keys():
             if key in ("v", "tid", "cid", "cd1", "cd2", "sr", "an"):
                 del params[key]