I was translating all paragraphs of en:Lemonade to Finnish in production (with debug flag) while inspecting T234417. When I reached paragraph "Alcoholic varieties are known as hard lemonade", I got message "Machine translation failed" and was not able to translate with Google. By inspecting network response, I obtained following error:
Error: Rejecting items in subqueue from BatchedAPIRequest. This is harmless unless already resolved.
at rejectSubqueue (/srv/service/lib/mw/BatchedAPIRequest.js:71:19)
at tryCatcher (/srv/service/node_modules/bluebird/js/release/util.js:16:23)
at Promise._settlePromiseFromHandler (/srv/service/node_modules/bluebird/js/release/promise.js:517:31)
at Promise._settlePromise (/srv/service/node_modules/bluebird/js/release/promise.js:574:18)
at Promise._settlePromise0 (/srv/service/node_modules/bluebird/js/release/promise.js:619:10)
at Promise._settlePromises (/srv/service/node_modules/bluebird/js/release/promise.js:699:18)
at _drainQueueStep (/srv/service/node_modules/bluebird/js/release/async.js:138:12)
at _drainQueue (/srv/service/node_modules/bluebird/js/release/async.js:131:9)
at Async._drainQueues (/srv/service/node_modules/bluebird/js/release/async.js:147:5)
at Immediate.Async.drainQueues (/srv/service/node_modules/bluebird/js/release/async.js:17:14)
at runCallback (timers.js:705:18)
at tryOnImmediate (timers.js:676:5)
at processImmediate (timers.js:658:5)