Gulp - issue with 'Task function must be specified'

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added Jul 11, 2019 in Gulp by LC Marshal Captain (25,790 points)

Example of error as shown below:

$ gulp
  throw new errors.AssertionError(obj);

AssertionError [ERR_ASSERTION]: Task function must be specified


Commonly it related to gulp version 4.0. 2 options avaiable to fix it:

  1. Downgrade your gulp version
    1. Edit your package.json with:
      "gulp": "^3.9.1",
    2. Remove your node_modules folder
      rm -rf node_modules
    3. And reinstall it by 
      npm i
  2. Or, update your working code to 4.0
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