error: Failed to update settings at /dashboard/management/admins { svrid: '392005168155066378', usrid: '223105543076577282' } MongoError: Unknown modifier: $pushAll
    at Function.MongoError.create (/var/mybot/node_modules/mongoose/node_modules/mongodb-core/lib/error.js:31:11)
    at toError (/var/mybot/node_modules/mongoose/node_modules/mongodb/lib/utils.js:139:22)
    at /var/mybot/node_modules/mongoose/node_modules/mongodb/lib/collection.js:1060:67
    at /var/mybot/node_modules/mongoose/node_modules/mongodb-core/lib/connection/pool.js:469:18
    at process._tickCallback (internal/process/next_tick.js:150:11)