intermittent error in LibGuides

[regineheberlein]

Expected behavior

LibGuides does not error

Actual behavior

Libguide throws error JSON::ParserError: unexpected token at 'No alive nodes found in your clu'

Impact of this bug

This interferes with patron's and staff's access to LibGuides

Honeybadger link and code snippet, if applicable

Honeybadger

JSON::ParserError: unexpected token at 'No alive nodes found in your clu'
  #
  def parse(source, opts = nil)
    Parser.parse(source, opts)
  end```

### Implementation notes, if any

[regineheberlein]

Suggestion from @maxkadel : add rescue for json parse errors since our third party services aren't super consistent in returning json