bugfix group creation after group server crash

server.py

@@ -422,7 +422,7 @@ class Server(multiprocessing.Process):
     # Register client. Check if chatgroup exists, if yes answer client with chatgroup server IP   
     def register_client(self, group, client_addr):
        
-        if group not in self.local_servers_cache:
+        if group not in self.local_group_cache:
             print(self.server_id+": "+"Group "+group+" doesn't exist.")
     
         else:
@@ -438,9 +438,18 @@ class Server(multiprocessing.Process):
             self.local_clients_cache[client_cache_key] = client_addr
 
     def find_groupchat_server_addresse(self, group):
-        for key in self.local_servers_cache:
+        # double check if group really exist
+        for key in self.local_group_cache:
+            print("Key ", key)
             if group == str(key):
-                addr = self.local_servers_cache[key][0]
+                print("ID: ", self.local_group_cache[key])
+                if self.local_group_cache[key] == "MAIN":
+                    addr = self.server_address
+                else:
+                    id = self.local_group_cache[key]
+                    addr = self.local_servers_cache[id][0]
+
+                print("Address: ", addr)
 
         return addr