Unable to fetch an event, the other one is being fetch correctly.

[Zartaj0]

Hello Community, I am trying to fetch two events from a contract on goerli. One of them is being fetched correctly but the other one doesn't.

The working one :

 let eventFilter = Core.filters.AddChannel();//Core is the contract instance, and it is correctly initialized. 
  let events = await Core.queryFilter(eventFilter);
  console.log(`Total ${events.length} Add events found `);

Not working :

let Filter = Core.filters.UpdateChannel();
 let events = await Core.queryFilter(Filter);

 console.log(`Total ${events.length} update events found`);

here is the contract address : 0x23346b732d56d34ec4e890419fbfb8548216a799