Fix MissingSpecError

✅ Solution

The "MissingSpecError" in fluentd usually arises from gem dependency conflicts or an outdated gem specification within the fluentd plugins' ecosystem. Resolve this by explicitly specifying compatible gem versions in your Gemfile (if using bundler) or directly installing the required gem versions using `gem install gem_name -v version`. Afterwards, restart fluentd to load the corrected gem dependencies.