new test needs json

api/ble.py

@@ -260,6 +260,7 @@ def test(test_count = 0) -> None:
 # If run as a script, execute the legacy test
 # --------------------------------------------------------------------------- #
 if __name__ == "__main__":
+    import json
     test_count = 0
     print("Welp, this will keep going forever. Have fun :)")
     while True: