Mime::Type::InvalidMimeType: "*.*" is not a valid MIME type

https://sentry.gitlab.net/gitlab/gitlabcom/issues/1213480/

Mime::Type::InvalidMimeType: "*.*" is not a valid MIME type
  action_dispatch/http/mime_type.rb:235:in `initialize'
    raise InvalidMimeType, "#{string.inspect} is not a valid MIME type"
  action_dispatch/http/mime_type.rb:143:in `new'
    LOOKUP[string] || Type.new(string)
  action_dispatch/http/mime_type.rb:143:in `lookup'
    LOOKUP[string] || Type.new(string)
  action_dispatch/http/mime_type.rb:125:in `block in sort!'
    list.map! { |i| Mime::Type.lookup(i.name) }.uniq!
  action_dispatch/http/mime_type.rb:125:in `map!'
    list.map! { |i| Mime::Type.lookup(i.name) }.uniq!
...
(111 additional frame(s) were not displayed)

Mime::Type::InvalidMimeType: "*.*" is not a valid MIME type
  action_dispatch/http/mime_type.rb:235:in `initialize'
    raise InvalidMimeType, "#{string.inspect} is not a valid MIME type"
  action_dispatch/http/mime_type.rb:143:in `new'
    LOOKUP[string] || Type.new(string)
  action_dispatch/http/mime_type.rb:143:in `lookup'
    LOOKUP[string] || Type.new(string)
  action_dispatch/http/mime_type.rb:125:in `block in sort!'
    list.map! { |i| Mime::Type.lookup(i.name) }.uniq!
  action_dispatch/http/mime_type.rb:125:in `map!'
    list.map! { |i| Mime::Type.lookup(i.name) }.uniq!
...
(83 additional frame(s) were not displayed)

Mime::Type::InvalidMimeType: "*.*" is not a valid MIME type
  action_dispatch/http/mime_type.rb:235:in `initialize'
    raise InvalidMimeType, "#{string.inspect} is not a valid MIME type"
  action_dispatch/http/mime_type.rb:143:in `new'
    LOOKUP[string] || Type.new(string)
  action_dispatch/http/mime_type.rb:143:in `lookup'
    LOOKUP[string] || Type.new(string)
  action_dispatch/http/mime_type.rb:125:in `block in sort!'
    list.map! { |i| Mime::Type.lookup(i.name) }.uniq!
  action_dispatch/http/mime_type.rb:125:in `map!'
    list.map! { |i| Mime::Type.lookup(i.name) }.uniq!
...
(83 additional frame(s) were not displayed)

Mime::Type::InvalidMimeType: "*.*" is not a valid MIME type
  action_dispatch/http/mime_type.rb:235:in `initialize'
    raise InvalidMimeType, "#{string.inspect} is not a valid MIME type"
  action_dispatch/http/mime_type.rb:143:in `new'
    LOOKUP[string] || Type.new(string)
  action_dispatch/http/mime_type.rb:143:in `lookup'
    LOOKUP[string] || Type.new(string)
  action_dispatch/http/mime_type.rb:125:in `block in sort!'
    list.map! { |i| Mime::Type.lookup(i.name) }.uniq!
  action_dispatch/http/mime_type.rb:125:in `map!'
    list.map! { |i| Mime::Type.lookup(i.name) }.uniq!
...
(87 additional frame(s) were not displayed)

Mime::Type::InvalidMimeType: "*.*" is not a valid MIME type