error

gistfile1.txt

domain.js:66
    throw er;
          ^
TypeError: Object function model(doc, fields, skipId) {
    if (!(this instanceof model))
      return new model(doc, fields, skipId);
    Model.call(this, doc, fields, skipId);
  } has no method 'pre'
    at Promise.exports.destroy (/Applications/MAMP/htdocs/apps/labs/sweeps-api/routes/clients.js:82:10)
    at Promise.addBack (/Applications/MAMP/htdocs/apps/labs/sweeps-api/node_modules/mongoose/lib/promise.js:128:8)
    at Promise.EventEmitter.emit (events.js:93:17)
    at Promise.emit (/Applications/MAMP/htdocs/apps/labs/sweeps-api/node_modules/mongoose/lib/promise.js:66:38)
    at Promise.complete (/Applications/MAMP/htdocs/apps/labs/sweeps-api/node_modules/mongoose/lib/promise.js:77:20)
    at Query.findOne (/Applications/MAMP/htdocs/apps/labs/sweeps-api/node_modules/mongoose/lib/query.js:1607:15)
    at model.Document.init (/Applications/MAMP/htdocs/apps/labs/sweeps-api/node_modules/mongoose/lib/document.js:229:11)
    at model.init (/Applications/MAMP/htdocs/apps/labs/sweeps-api/node_modules/mongoose/lib/model.js:196:36)
    at Query.findOne (/Applications/MAMP/htdocs/apps/labs/sweeps-api/node_modules/mongoose/lib/query.js:1605:12)
    at exports.tick (/Applications/MAMP/htdocs/apps/labs/sweeps-api/node_modules/mongoose/lib/utils.js:429:16)
16 Jan 09:41:36 - [nodemon] app crashed - waiting for file changes before starting...