```
error
{ SequelizeDatabaseError: null value in column "password" violates not-null constraint
    at Query.formatError (/Users/Raissa/bloc/blocipedia/node_modules/sequelize/lib/dialects/postgres/query.js:363:16)
    at query.catch.err (/Users/Raissa/bloc/blocipedia/node_modules/sequelize/lib/dialects/postgres/query.js:86:18)
    at tryCatcher (/Users/Raissa/bloc/blocipedia/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/Users/Raissa/bloc/blocipedia/node_modules/bluebird/js/release/promise.js:512:31)
    at Promise._settlePromise (/Users/Raissa/bloc/blocipedia/node_modules/bluebird/js/release/promise.js:569:18)
    at Promise._settlePromise0 (/Users/Raissa/bloc/blocipedia/node_modules/bluebird/js/release/promise.js:614:10)
    at Promise._settlePromises (/Users/Raissa/bloc/blocipedia/node_modules/bluebird/js/release/promise.js:690:18)
    at _drainQueueStep (/Users/Raissa/bloc/blocipedia/node_modules/bluebird/js/release/async.js:138:12)
    at _drainQueue (/Users/Raissa/bloc/blocipedia/node_modules/bluebird/js/release/async.js:131:9)
    at Async._drainQueues (/Users/Raissa/bloc/blocipedia/node_modules/bluebird/js/release/async.js:147:5)
    at Immediate.Async.drainQueues [as _onImmediate] (/Users/Raissa/bloc/blocipedia/node_modules/bluebird/js/release/async.js:17:14)
    at runCallback (timers.js:705:18)
    at tryOnImmediate (timers.js:676:5)
    at processImmediate (timers.js:658:5)
  name: 'SequelizeDatabaseError',
  parent:
   { error: null value in column "password" violates not-null constraint
       at Connection.parseE (/Users/Raissa/bloc/blocipedia/node_modules/pg/lib/connection.js:545:11)
       at Connection.parseMessage (/Users/Raissa/bloc/blocipedia/node_modules/pg/lib/connection.js:370:19)
       at Socket.<anonymous> (/Users/Raissa/bloc/blocipedia/node_modules/pg/lib/connection.js:113:22)
       at Socket.emit (events.js:182:13)
       at addChunk (_stream_readable.js:283:12)
       at readableAddChunk (_stream_readable.js:264:11)
       at Socket.Readable.push (_stream_readable.js:219:10)
       at TCP.onStreamRead [as onread] (internal/stream_base_commons.js:94:17)
     name: 'error',
     length: 270,
     severity: 'ERROR',
     code: '23502',
     detail:
      'Failing row contains (6, raibola, harry_anne10@yahoo.com, null, 2019-03-12 14:46:16.979+00, 2019-03-12 14:46:16.979+00).',
     hint: undefined,
     position: undefined,
     internalPosition: undefined,
     internalQuery: undefined,
     where: undefined,
     schema: 'public',
     table: 'Users',
     column: 'password',
     dataType: undefined,
     constraint: undefined,
     file: 'execMain.c',
     line: '2008',
     routine: 'ExecConstraints',
     sql:
      'INSERT INTO "Users" ("id","username","email","createdAt","updatedAt") VALUES (DEFAULT,\'raibola\',\'harry_anne10@yahoo.com\',\'2019-03-12 14:46:16.979 +00:00\',\'2019-03-12 14:46:16.979 +00:00\') RETURNING *;' },
  original:
   { error: null value in column "password" violates not-null constraint
       at Connection.parseE (/Users/Raissa/bloc/blocipedia/node_modules/pg/lib/connection.js:545:11)
       at Connection.parseMessage (/Users/Raissa/bloc/blocipedia/node_modules/pg/lib/connection.js:370:19)
       at Socket.<anonymous> (/Users/Raissa/bloc/blocipedia/node_modules/pg/lib/connection.js:113:22)
       at Socket.emit (events.js:182:13)
       at addChunk (_stream_readable.js:283:12)
       at readableAddChunk (_stream_readable.js:264:11)
       at Socket.Readable.push (_stream_readable.js:219:10)
       at TCP.onStreamRead [as onread] (internal/stream_base_commons.js:94:17)
     name: 'error',
     length: 270,
     severity: 'ERROR',
     code: '23502',
     detail:
      'Failing row contains (6, raibola, harry_anne10@yahoo.com, null, 2019-03-12 14:46:16.979+00, 2019-03-12 14:46:16.979+00).',
     hint: undefined,
     position: undefined,
     internalPosition: undefined,
     internalQuery: undefined,
     where: undefined,
     schema: 'public',
     table: 'Users',
     column: 'password',
     dataType: undefined,
     constraint: undefined,
     file: 'execMain.c',
     line: '2008',
     routine: 'ExecConstraints',
     sql:
      'INSERT INTO "Users" ("id","username","email","createdAt","updatedAt") VALUES (DEFAULT,\'raibola\',\'harry_anne10@yahoo.com\',\'2019-03-12 14:46:16.979 +00:00\',\'2019-03-12 14:46:16.979 +00:00\') RETURNING *;' },
  sql:
   'INSERT INTO "Users" ("id","username","email","createdAt","updatedAt") VALUES (DEFAULT,\'raibola\',\'harry_anne10@yahoo.com\',\'2019-03-12 14:46:16.979 +00:00\',\'2019-03-12 14:46:16.979 +00:00\') RETURNING *;' }