try to avoid thread exception

commandor_page.py

@@ -33,6 +33,8 @@ class CommandorPage:
     def _run(self, e: threading.Event, proxy, contact: ContactPojo, on_ready_for_otp, on_success):
         self.contact = contact
         self.on_success_listener = on_success
+        # reset otp_value to None
+        self.otp_value = None
         with sync_playwright() as pwright:
             firefox_user_agents = filter(lambda user_agent: "firefox" in user_agent.lower(), user_agent_list)
             firefox_user_agents_list = list(firefox_user_agents)
@@ -97,6 +99,7 @@ class CommandorPage:
             return self.page.content()
         except Exception as error:
             self.logger.exception(error)
+            self.browser.close()
             return None
 
     def start_page(self, proxy, contact: ContactPojo, on_ready_for_otp, on_sucess) -> threading.Event: