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I'm new to Angular. I installed Angular CLI from Angular.io, but I get this error:

"Tree type is not supported"

when creating a new Angular project.

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4 Answers 4

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  • reinstall global @angular/cli

Finally removed yarn.lock and node_modules and installed again worked for me. This could help someone who has trouble now.

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i don't have yarn.lock , and i reinstalled global @angular/cli many times with diffrerent methods , but nothing changes
He meant to say, remove yarn.lock or package.json with node_modules. This worked for me. I was having issue generating a module.
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I had the same issue, solved uninstalled angular cli global and reinstalling it again, did you tried that?

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Yes i did , but nothing changes
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I had same issue with different cases, ng new, and ngrx commands...

Please track this issue https://github.com/angular/angular-cli/issues/11707

Just downgrade CLI to 6.0.8 should work.

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after downgrade , when creating new project , this error comes " Invalid rule result: Function(). "
@AyoubGhozzi please refer this comment. github.com/angular/angular-cli/issues/…
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Upgrading npm to 6.4.1 solved issue for me

sudo npm update -g

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