Run "heroku local" encounter /bin/sh: go-websocket-chat-demo: command not found

[tonyydl]

I refer to this doc: https://devcenter.heroku.com/articles/go-websockets

and try to run heroku local, but I got failed:

➜  go-websocket-chat-demo git:(master) ✗ heroku local
[OKAY] Loaded ENV .env File as KEY=VALUE Format
10:18:20 ├F10: AM┤ web.1 |  /bin/sh: go-websocket-chat-demo: command not found
[DONE] Killing all processes with signal  SIGINT
10:18:20 ├F10: AM┤ web.1 Exited with exit code null

I also start redis server in local, but not working:

➜  ~ redis-server /usr/local/etc/redis.conf
79738:C 01 Nov 2021 10:15:52.979 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
79738:C 01 Nov 2021 10:15:52.979 # Redis version=6.2.6, bits=64, commit=00000000, modified=0, pid=79738, just started
79738:C 01 Nov 2021 10:15:52.979 # Configuration loaded
79738:M 01 Nov 2021 10:15:52.980 * Increased maximum number of open files to 10032 (it was originally set to 256).
79738:M 01 Nov 2021 10:15:52.980 * monotonic clock: POSIX clock_gettime
                _._
           _.-``__ ''-._
      _.-``    `.  `_.  ''-._           Redis 6.2.6 (00000000/0) 64 bit
  .-`` .-```.  ```\/    _.,_ ''-._
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 79738
  `-._    `-._  `-./  _.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |           https://redis.io
  `-._    `-._`-.__.-'_.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |
  `-._    `-._`-.__.-'_.-'    _.-'
      `-._    `-.__.-'    _.-'
          `-._        _.-'
              `-.__.-'

79738:M 01 Nov 2021 10:15:52.991 # Server initialized
79738:M 01 Nov 2021 10:15:52.992 * Loading RDB produced by version 6.2.6
79738:M 01 Nov 2021 10:15:52.992 * RDB age 87931 seconds
79738:M 01 Nov 2021 10:15:52.992 * RDB memory usage when created 1.02 Mb
79738:M 01 Nov 2021 10:15:52.992 # Done loading RDB, keys loaded: 0, keys expired: 0.
79738:M 01 Nov 2021 10:15:52.992 * DB loaded from disk: 0.001 seconds
79738:M 01 Nov 2021 10:15:52.992 * Ready to accept connections