Not working at all

[blazetango]

@pedrofurtado @marciojg I m trying the basic example given on the github gem page
`require 'microsoft_teams_incoming_webhook_ruby'

webhook_url = "xxxxincoming hookxxxxxx" # Replace with your actual webhook URL

message = MicrosoftTeamsIncomingWebhookRuby::Message.new do |m|
m.url = webhook_url
m.text = 'Minimal message!'
m.title = "my title"
end

message.send`

it return this error

not sure i m doing some thing wrong or the gem has some problem please help