web front npm won't start #26

gitbitex@1.0.0 build
gulp --env=prod

AssertionError [ERR_ASSERTION]: Task function must be specified
at Gulp.set [as _setTask] (./extest/gitbitex-web/node_modules/undertaker/lib/set-task.js:10:3)
at Gulp.task (./extest/gitbitex-web/node_modules/undertaker/lib/task.js:13:8)
at ./extest/gitbitex-web/gulpfile.js:59:25
at createTask (./extest/gitbitex-web/gulpfile.js:62:11)
at Object. (./extest/gitbitex-web/gulpfile.js:178:5)
at Module._compile (node:internal/modules/cjs/loader:1109:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1138:10)
at Module.load (node:internal/modules/cjs/loader:989:32)
at Function.Module._load (node:internal/modules/cjs/loader:829:14)
at Module.require (node:internal/modules/cjs/loader:1013:19) {
generatedMessage: false,
code: 'ERR_ASSERTION',
actual: false,
expected: true,
operator: '=='
}