NoMethodError: undefined method `>' for #<Gitlab::CycleAnalytics::Summary::Value::PrettyNumeric:0x00007fa1dfce16d8>

https://sentry.gitlab.net/gitlab/gitlabcom/issues/1591488/?referrer=gitlab_plugin

NoMethodError: undefined method `>' for #<Gitlab::CycleAnalytics::Summary::Value::PrettyNumeric:0x00007fa1dfce16d8>
  (eval):1:in `block (2 levels) in pluralisation_rule'
  fast_gettext/mo_file.rb:28:in `eval'
    return lambda{|n|eval($2)} if /^Plural-Forms:\s*nplurals\s*\=\s*(\d*);\s*plural\s*\=\s*([^;]*)\n?/ =~ line
  fast_gettext/mo_file.rb:28:in `block (2 levels) in pluralisation_rule'
    return lambda{|n|eval($2)} if /^Plural-Forms:\s*nplurals\s*\=\s*(\d*);\s*plural\s*\=\s*([^;]*)\n?/ =~ line
  fast_gettext/translation.rb:32:in `n_'
    selected = FastGettext.pluralisation_rule.call(count)
  gettext_i18n_rails/html_safe_translations.rb:15:in `n_'
    html_safe_if_wanted super
...
(168 additional frame(s) were not displayed)

NoMethodError: undefined method `>' for #<Gitlab::CycleAnalytics::Summary::Value::PrettyNumeric:0x00007fa1dfce16d8>