sails destroy error

gistfile1.txt

error: Sending 500 ("Server Error") response:
 [ { type: 'update',
    collection: 'trip',
    criteria: { id: 20 },
    values: { creator: null },
    err:
     Error (E_VALIDATION) :: 1 attribute is invalid
     :
       at WLValidationError.WLError (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/error/WLError.js:33:18)
       at new WLValidationError (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/error/WLValidationError.js:20:28)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/validate.js:45:43
       at allValidationsChecked (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/core/validations.js:195:5)
       at done (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:135:19)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:32:16
       at /usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/core/validations.js:186:14
       at done (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:135:19)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:32:16
       at /usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/core/validations.js:157:64
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:125:13
       at Array.forEach (native)
       at _each (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:46:24)
       at Object.async.each (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:124:9)
       at validate (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/core/validations.js:156:11)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:125:13
       at Array.forEach (native)
       at _each (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:46:24)
       at Object.async.each (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:124:9)
       at [object Object].Validator.validate (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/core/validations.js:192:9)
       at async.series.runner (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/validate.js:41:25)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:610:21
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:249:17
       at iterate (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:149:13)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:160:25
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:251:21
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:615:34
       at /usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/validate.js:35:11
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:157:25
       at /usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/validate.js:29:13
       at /usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/utils/schema.js:151:44
       at runner (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/validate.js:27:11)
       at iterate (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:149:13)
       at Object.async.eachSeries (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:165:9)
       at async.series.self._validator.validate.WLValidationError.invalidAttributes (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/validate.js:33:15)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:610:21
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:249:17
       at iterate (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:149:13)
       at async.eachSeries (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:165:9)
       at _asyncMap (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:248:13)
       at Object.mapSeries (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:231:23)
       at Object.async.series (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:608:19)
       at bound.module.exports.validate (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/validate.js:22:11)
       at bound [as validate] (/usr/local/lib/node_modules/sails/node_modules/lodash/dist/lodash.js:729:21)
       at Object.runner.validate (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/utils/callbacksRunner.js:25:11)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/dql/update.js:160:17
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:610:21
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:249:17
       at iterate (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:149:13)
       at async.eachSeries (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:165:9)
       at _asyncMap (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:248:13)
       at Object.mapSeries (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:231:23)
       at Object.async.series (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:608:19)
       at bound.beforeCallbacks (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/dql/update.js:156:9)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/dql/update.js:50:21
       at Object.async.each (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:121:20)
       at bound.createBelongsTo (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/dql/update.js:101:9)
       at bound.module.exports (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/dql/update.js:47:19)
       at bound [as update] (/usr/local/lib/node_modules/sails/node_modules/lodash/dist/lodash.js:729:21)
       at [object Object].Remove.removeRecord (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/model/lib/associationMethods/remove.js:170:14)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/model/lib/associationMethods/remove.js:113:10
       at replenish (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:194:21)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:211:15
       at Object.async.eachLimit (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:171:12)
       at [object Object].Remove.removeAssociations (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/model/lib/associationMethods/remove.js:112:9)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/model/lib/associationMethods/remove.js:80:10
       at iterate (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:149:13)
       at Object.async.eachSeries (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:165:9)
       at [object Object].Remove.removeCollectionAssociations (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/model/lib/associationMethods/remove.js:79:9)
       at new module.exports (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/model/lib/associationMethods/remove.js:42:8)
       at Array.async.auto.removeAssociations [as 2] (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/model/lib/defaultMethods/save.js:124:14)
       at listener (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:493:46)
       at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:444:17
       at Array.forEach (native)
       at _each (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:46:24)
       at Object.taskComplete (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:443:13)
       at processImmediate [as _immediateCallback] (timers.js:345:15)


     Invalid attributes sent to Trip:
      • creator
        • "required" validation rule failed for input: null
      } ]