"502 Bad Gateway" when visiting certain URLs, Part 2

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Part 1: "502 Bad Gateway" when visiting certain URLs

GWT reported another 502 error:

• http://expats.askbot.com/load-tag-wiki-text/

It looks like Googlebot is piecing together URLs based on all the path fragments that appear in the Javascript on the page:

askbot['urls']['mark_interesting_tag'] = '/en/mark-tag/interesting/';
askbot['urls']['mark_ignored_tag'] = '/en/mark-tag/ignored/';
askbot['urls']['unmark_tag'] = '/en/unmark-tag/';
askbot['urls']['set_tag_filter_strategy'] = '/en/set-tag-filter-strategy/';
askbot['urls']['questions'] = '/en/questions/';
askbot['urls']['question_url_template'] = scriptUrl + 'question/{{QuestionID}}/';

etc.