Edge case where passing decode_ss58 = True to decode query map but old old blocks are encoded already as str

Author: thewhaleking

async_substrate_interface/utils/decoding.py

@@ -135,7 +135,10 @@ def concat_hash_len(key_hasher: str) -> int:
             if len(param_types) - len(params) == 1:
                 item_key = dk[1]
                 if decode_ss58:
-                    if kts[kts.index(", ") + 2 : kts.index(")")] == "scale_info::0":
+                    if (
+                        isinstance(item_key[0], (tuple, list))
+                        and kts[kts.index(", ") + 2 : kts.index(")")] == "scale_info::0"
+                    ):
                         item_key = ss58_encode(bytes(item_key[0]), runtime.ss58_format)
             else:
                 try: