Update mychain.py

mychain.py

@@ -152,14 +152,14 @@ class MyChainSend:
 
 class MyChainRec:
 
-    def __init__(self,chain_load,load=None,create=None):
+    def __init__(self,chain_load,prev_block=None, load=None,create=None):
         global main_chain_rec
         main_chain_rec=chain_load
         
         self.pending_transactions = []
         if load == None or load=="":
             self.chain = []
-            self.create_block(balance=0, proof=1, previous_hash='0',chain_n=create)
+            self.create_block(balance=0, proof=1, prev_block=None, previous_hash='0',chain_n=create)
         if load != None and load !="":
             #r = requests.get(load) 
             lod = json.loads(load)