Internationalization problem

I tried to add a culture to Radzen so I could fix some date formatting on datagrids, but after doing it I get this error when I press run:

radzen: Building Angular application cultures translations ...
xliffmerge: Target 'xliffmerge' could not be found in project 'client'.
xliffmerge:

xliffmerge: Error: Target 'xliffmerge' could not be found in project 'client'.
at Architect._getProjectTarget (/home/levi/Desktop/CNPJ-RADZEN3/client/node_modules/@angular-devkit/architect/src/architect-legacy.js:111:19)
at Architect.getBuilderConfiguration (/home/levi/Desktop/CNPJ-RADZEN3/client/node_modules/@angular-devkit/architect/src/architect-legacy.js:118:29)
at RunCommand.runSingleTarget (/home/levi/Desktop/CNPJ-RADZEN3/client/node_modules/@angular/cli/models/architect-command.js:160:45)
at RunCommand.runArchitectTarget (/home/levi/Desktop/CNPJ-RADZEN3/client/node_modules/@angular/cli/models/architect-command.js:201:35)
at RunCommand.run (/home/levi/Desktop/CNPJ-RADZEN3/client/node_modules/@angular/cli/commands/run-impl.js:14:25)
at RunCommand.validateAndRun (/home/levi/Desktop/CNPJ-RADZEN3/client/node_modules/@angular/cli/models/command.js:124:31)
at process._tickCallback (internal/process/next_tick.js:68:7)
at Function.Module.runMain (internal/modules/cjs/loader.js:755:11)
at startup (internal/bootstrap/node.js:241:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:579:3)
xliffmerge: Exited with code: 1

xliffmerge is part of default node_modules installed with Radzen. Make sure you do not have custom node_modules for your application.

What should I do, if I have custom node_modules?
Should I add it somehow manually?

If it's missing you should add it.