An access to https://en.wikipedia.org/api/rest_v1/page/html/WWL_World_Trios_Championship/678143660
results in
```
TypeError: Cannot read property 'body' of undefined
at /srv/deployment/restbase/deploy/restbase/sys/parsoid.js:322:37
at tryCatcher (/srv/deployment/restbase/deploy/node_modules/bluebird/js/main/util.js:24:31)
at Promise._settlePromiseFromHandler (/srv/deployment/restbase/deploy/node_modules/bluebird/js/main/promise.js:582:31)
at Promise._settlePromiseAt (/srv/deployment/restbase/deploy/node_modules/bluebird/js/main/promise.js:727:18)
at Promise._settlePromises (/srv/deployment/restbase/deploy/node_modules/bluebird/js/main/promise.js:845:14)
at Async._drainQueue (/srv/deployment/restbase/deploy/node_modules/bluebird/js/main/async.js:79:16)
at Async._drainQueues (/srv/deployment/restbase/deploy/node_modules/bluebird/js/main/async.js:89:10)
at Async.drainQueues (/srv/deployment/restbase/deploy/node_modules/bluebird/js/main/async.js:14:14)
at process._tickCallback (node.js:419:13)
```
Parsoid is returning a 404 for this title (http://parsoid-lb.eqiad.wikimedia.org/en.wikipedia.org/v1/page/html/WWL_World_Trios_Championship/678143660), and for some reason this does not cause an exception in RESTBase, which would prevent it from [dereferencing the body](https://github.com/wikimedia/restbase/blob/3d55db3229cde6b259359d0776326df9080e1810/sys/parsoid.js#L222).