diff --git a/capsulflask/hub_model.py b/capsulflask/hub_model.py
index 840cefb..b9fd1ee 100644
--- a/capsulflask/hub_model.py
+++ b/capsulflask/hub_model.py
@@ -8,7 +8,6 @@ from typing import List, Tuple
 
 import aiohttp
 from flask import current_app
-from flask import session
 from time import sleep
 from os.path import join
 from subprocess import run
@@ -51,21 +50,22 @@ class MockHub(VirtualizationInterface):
 
 class CapsulFlaskHub(VirtualizationInterface):
 
-  def synchronous_operation(self, hosts: List[OnlineHost], payload: str) -> List[HTTPResult]:
-    return self.generic_operation(hosts, payload, True)[1]
+  def synchronous_operation(self, hosts: List[OnlineHost], email: str, payload: str) -> List[HTTPResult]:
+    return self.generic_operation(hosts, email, payload, True)[1]
   
-  def asynchronous_operation(self, hosts: List[OnlineHost], payload: str) -> Tuple[int, List[HTTPResult]]:
-    return self.generic_operation(hosts, payload, False)
+  def asynchronous_operation(self, hosts: List[OnlineHost], email: str, payload: str) -> Tuple[int, List[HTTPResult]]:
+    return self.generic_operation(hosts, email, payload, False)
 
-  def generic_operation(self, hosts: List[OnlineHost], payload: str, immediate_mode: bool) -> Tuple[int, List[HTTPResult]]:
-    email = session["account"]
-    if not email or email == "":
-      raise ValueError("generic_operation was called but user was not logged in")
+  def generic_operation(self, hosts: List[OnlineHost], email: str, payload: str, immediate_mode: bool) -> Tuple[int, List[HTTPResult]]:
+    
     url_path = "/spoke/operation"
     operation_id = None
     if not immediate_mode:
+      if not email or email == "":
+        raise ValueError("can't create_operation in the db cuz no email was provided")
       operation_id = get_model().create_operation(hosts, email, payload)
       url_path = f"/spoke/operation/{operation_id}"
+
     authorization_header = f"Bearer {current_app.config['HUB_TOKEN']}"
     results = current_app.config["HTTP_CLIENT"].do_multi_http_sync(hosts, url_path, payload, authorization_header=authorization_header)
 
@@ -123,7 +123,7 @@ class CapsulFlaskHub(VirtualizationInterface):
   def capacity_avaliable(self, additional_ram_bytes):
     online_hosts = get_model().get_online_hosts()
     payload = json.dumps(dict(type="capacity_avaliable", additional_ram_bytes=additional_ram_bytes))
-    results = self.synchronous_operation(online_hosts, payload)
+    results = self.synchronous_operation(online_hosts, None, payload)
     for result in results:
       try:
         result_body = json.loads(result.body)
@@ -140,7 +140,7 @@ class CapsulFlaskHub(VirtualizationInterface):
     host = get_model().host_of_capsul(id)
     if host is not None:
       payload = json.dumps(dict(type="get", id=id, get_ssh_host_keys=get_ssh_host_keys))
-      results = self.synchronous_operation([host], payload)
+      results = self.synchronous_operation([host], None, payload)
       for result in results:
         try:
           result_body = json.loads(result.body)
@@ -154,7 +154,7 @@ class CapsulFlaskHub(VirtualizationInterface):
   def list_ids(self) -> list:
     online_hosts = get_model().get_online_hosts()
     payload = json.dumps(dict(type="list_ids"))
-    results = self.synchronous_operation(online_hosts, payload)
+    results = self.synchronous_operation(online_hosts, None, payload)
     to_return = []
     for i in range(len(results)):
       host = online_hosts[i]
@@ -193,7 +193,7 @@ class CapsulFlaskHub(VirtualizationInterface):
       memory_mb=memory_mb,
       ssh_authorized_keys=ssh_authorized_keys,
     ))
-    op = self.asynchronous_operation(online_hosts, payload)
+    op = self.asynchronous_operation(online_hosts, email, payload)
     operation_id = op[0]
     results = op[1]
     number_of_assigned = 0
@@ -226,7 +226,7 @@ class CapsulFlaskHub(VirtualizationInterface):
     host = get_model().host_of_capsul(id)
     if host is not None:
       payload = json.dumps(dict(type="destroy", email=email, id=id))
-      results = self.synchronous_operation([host], payload)
+      results = self.synchronous_operation([host], email, payload)
       result_json_string = "<no response from host>"
       for result in results:
         try:
@@ -247,7 +247,7 @@ class CapsulFlaskHub(VirtualizationInterface):
     host = get_model().host_of_capsul(id)
     if host is not None:
       payload = json.dumps(dict(type="vm_state_command", email=email, id=id, command=command))
-      results = self.synchronous_operation([host], payload)
+      results = self.synchronous_operation([host], email, payload)
       result_json_string = "<no response from host>"
       for result in results:
         try: