Ethereum 201 TypeError [ERR_INVALID_REPL_INPUT]: Listeners for `uncaughtException` cannot be used in the REPL

[Keith1]

Hi,
I attempted building ‘first test’ in Ethereum 201 and get the following errror

TypeError [ERR_INVALID_REPL_INPUT]: Listeners for uncaughtException cannot be used in the REPL

can anyone help?

Keith

[thecil]

Hello @Keith1, I have moved your topic to the proper category, so the community can reach to your questions easily.

Also if you could share an screenshot of what the console show up when the error appears will be appreciate it to help you.

If you have any more questions, please let us know so we can help you!

Carlos Z.

[dan-i]

Hey @Keith1

Please check this one:

Introduction to Unit Testing

Hey @Marcus_Tang Which version of node are you using? Proceed as follow: Open your Power Shell; Type: node -v; The Power Shell shows you the version of your nodeJs; [Schermata 2020-09-09 alle 10.32.28] If the version is 12 or higher, please downgrade it to this one: https://nodejs.org/dist/v11.12.0/

The steps are the same if you are using mac os or linux

[Keith1]

Hi,
indows PowerShell
Copyright © Microsoft Corporation. All rights reserved.

Try the new cross-platform PowerShell https://aka.ms/pscore6

PS C:\Users\keith> node -v
v12.18.3
PS C:\Users\keith>

Thanks for your help.

Keith

[dan-i]

Hey @Keith1

Please downgrade your node to this version: https://nodejs.org/dist/v11.12.0/

[AndyDang]

Thanks @dan-i . It works really well for me.

[josephg]

Hi, I attach this link which helped to downgrade to node@10 in MacOS Catalina. I’ve got an error trying v11.

https://apple.stackexchange.com/questions/171530/how-do-i-downgrade-node-or-install-a-specific-previous-version-using-homebrew

Regards,
Jose

[PapatoniC]

thanks @dan-i this fixed my issue as well on my Mac