❗️Rovo Dev CLI Error: "Failed to start Rovo Dev CLI: while scanning a quoted scalar"

Aman Ajmani

I'm running into an issue when trying to start the Rovo Dev CLI on macOS. Here's what happens:

After successful authentication via

acli rovodev auth login

I run:

 

acli rovodev run

 

And get the following error:

 Failed to start Rovo Dev CLI: while scanning a quoted scalar
in "<unicode string>", line 124, column 16:
- command: 'npm run dev &
^
found unexpected end of stream
in "<unicode string>", line 36888725, column 1:

^

 

Everything was working till an hour ago

Dr Valeri Colon (Connect Centric)

Hi @Aman Ajmani Welcome to the Rovo community!

This error indicates there’s a syntax problem in a YAML file (likely your manifest or config) that is preventing Rovo Dev CLI from starting. Specifically, the message: "while scanning a quoted scalar, found unexpected end of stream".

To fix this, open your YAML or manifest file and check for quotes—make sure every " has a closing match. If there are backslashes (\) inside the quotes, double them up (\\) or switch to single quotes instead. That usually clears the error.

Once the syntax is resolved, rerun acli rovodev run. If you continue to hit issues, please give it a thumbs-down feedback in the CLI and consider opening a support ticket.

Some other points of interest might be the Rovo Developer Community and the upcoming Ask Me Anything for Admins session!