Issue description as reported by aab:
2019-08-28 17:34:48 LOG_ERR: [khp.ignorelist.com:61055.f5f7f51c GET /api/statuses/show/178372.atom] ServerErrorAction: 500 Class 'OAuthRequest' not found
2019-08-28 17:39:50 LOG_ERR: [khp.ignorelist.com:65390.4483ff85 GET /api/statusnet/conversation/104672.rss] Handled serverError (500) but cannot output into desired format ('rss'): 'Class \'OAuthRequest\' not found'
2019-08-28 17:39:50 LOG_ERR: [khp.ignorelist.com:65390.4483ff85 GET /api/statusnet/conversation/104672.rss] ServerErrorAction: 500 Class 'OAuthRequest' not found
2019-08-28 17:40:49 LOG_ERR: [khp.ignorelist.com:65390.4c745f68 GET /api/statuses/show/18132.atom] Handled serverError (500) but cannot output into desired format ('atom'): 'Class \'OAuthRequest\' not found'
2019-08-28 17:40:49 LOG_ERR: [khp.ignorelist.com:65390.4c745f68 GET /api/statuses/show/18132.atom] ServerErrorAction: 500 Class 'OAuthRequest' not found
2019-08-28 17:47:41 LOG_ERR: [khp.ignorelist.com:65390.42ee9fd4 GET /api/statusnet/conversation/133023.as] Handled serverError (500) but cannot output into desired format ('as'): 'Class \'OAuthRequest\' not found'
