Olá, estou tendo esse erro ao rodar o comando gulp minify-js
iAssertionError [ERR_ASSERTION]: Task function must be specified
at Gulp.set [as _setTask] (/home/lucas/Documents/cursos/front-end/performance-web/node_modules/undertaker/lib/set-task.js:10:3)
at Gulp.task (/home/lucas/Documents/cursos/front-end/performance-web/node_modules/undertaker/lib/task.js:13:8)
at Object.<anonymous> (/home/lucas/Documents/cursos/front-end/performance-web/gulpfile.js:89:6)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at Module.require (internal/modules/cjs/loader.js:952:19)
at require (internal/modules/cjs/helpers.js:88:18)
at requireOrImport (/home/lucas/.nvm/versions/node/v14.16.1/lib/node_modules/gulp-cli/lib/shared/require-or-import.js:19:11) {
generatedMessage: false,
code: 'ERR_ASSERTION',
actual: false,
expected: true,
operator: '=='
}