Statsd example code fails with on_log exception

[ag-TJNII]

Versions:

• semantic_logger (4.16.1)
• statsd-ruby (1.5.0)

While following https://logger.rocketjob.io/metrics.html the statsd example code fails:

require 'semantic_logger'

subscriber = SemanticLogger::Metric::Statsd.new(url: "udp://localhost:8125")
SemanticLogger.on_log(subscriber)

/home/tom/.rbenv/versions/3.3.4/lib/ruby/gems/3.3.0/gems/semantic_logger-4.16.1/lib/semantic_logger/logger.rb:11:in `subscribe': When supplying an on_log subscriber, it must support the #call method (RuntimeError)
        from /home/tom/.rbenv/versions/3.3.4/lib/ruby/gems/3.3.0/gems/semantic_logger-4.16.1/lib/semantic_logger/semantic_logger.rb:240:in `on_log'
        from tmp/log_test.rb:4:in `<main>'