The link you followed will bring you to this page:

https://eu-central-1.protection.sophos.com/?d=meetup.com&u=aHR0cHM6Ly93d3cubWVldHVwLmNvbS96YWdhcm9sby13b3JkcHJlc3MtbWVldHVwL2V2ZW50cy8yOTY4NTUxODMv&i=NjBhZTRkZTQ0Zjc2ZTQwZTc5ZDI4ODE5&t=MWlXSmY2eXh1L0R6WEt4ZzJVclZFMjEzTit4T0hoSC9XaUwvQlhGMXZMdz0=&h=568d77b096644d7ebdf433c9f797c745&s=AVNPUEhUT0NFTkNSWVBUSVbVxbQhK3Nr99HbgwVjroNobJi6N2KveByPlS918GG2YA