SH0004: The build closed the link at its hello: the token is wrong

Class: usage, exit code 2.

attach (or MCP's start with link) reached a build listening on the live link, and said hello with --token (link's token). The build has another token, so it closed the link and read nothing more. A build makes a new token each time it starts, unless SHUYI_LINK_TOKEN sets it, and says it in its log line:

shuyi link: listening on 127.0.0.1:7357, token 3f0c9b2e8d1a4c6f9e7b5a3d2c1f0e9d

How to fix it. Pass the token of the build's latest log line as --token (or link's token), then attach again.

For example:

attach: error[SH0004]: the build at 127.0.0.1:7357 closed the link at its hello: the token is wrong