Error: Invalid operator: $regex about loopback-connector-cloudant HOT 3 CLOSED

'use strict';
module.exports = function(app) {
  var myDs = app.datasources.cldntlocal;
  function createMymodel() {
    myDs.automigrate('model1', function(err) {
      if (err)
        console.error('failed to migrate model-1 ', err);
      else {
        console.log('model created');
        insertModel();
      }
    });
  };
  function insertModel() {
    var myModel = app.models.model1;
    var testModel = {};
    testModel.foo = '123456789';
    var testModel2 = {foo: 'abcdefgh'};
    myModel.create([testModel, testModel2], function(err) {
      if (err)
        console.log('Insert failed ', err);
      else
        console.log('insert successful');
      myModel.find({where: {foo: {regexp: '^a'}}}, function(err, res) {
        if (err)
          console.log('find failed ', err);
        else
        console.log('find matching regexp: ', res);
      });
    });
  };
  myDs.once('connected', createMymodel);
};