MongoError: Unknown modifier: $pushAll when linking Twitter account

[alangibson]

With Mongo 3.5.13, I'm getting the following error when trying to link a Twitter account:

500 MongoError: Unknown modifier: $pushAll
   at Function.MongoError.create (/home/alangibson/dev/content-freshener/gui/web/node_modules/mongoose/node_modules/mongodb-core/lib/error.js:31:11)
   at toError (/home/alangibson/dev/content-freshener/gui/web/node_modules/mongoose/node_modules/mongodb/lib/utils.js:139:22)
   at /home/alangibson/dev/content-freshener/gui/web/node_modules/mongoose/node_modules/mongodb/lib/collection.js:1060:67
   at /home/alangibson/dev/content-freshener/gui/web/node_modules/mongoose/node_modules/mongodb-core/lib/connection/pool.js:469:18
   at _combinedTickCallback (internal/process/next_tick.js:131:7)
   at process._tickCallback (internal/process/next_tick.js:180:9)

Fix is to add 'usePushEach: true' option to User schema.

See Automattic/mongoose#5574.

[JoseRFJuniorLLMs]

'Unknown modifier: $pushAll'

[YasharF]

Per Automattic/mongoose#5574 (comment) the issue has been resolved in Mongoose 5.x . Hackathon-starter's version of mongoose npm package was upgraded from 4.11.7 to 5.0.9 with 11bb9a7

Have you tried the upgrade, or a rebase to pull in the latest changes? Does the problem persist after the mongoose upgrade without changing the User schema?