Deprecated command cause error?

Hi folks!

A little help here pls?

```
I1028 13:25:23.831084 1 init_google.cc:841] Command line arguments:
I1028 13:25:23.831086 1 init_google.cc:843] argv[0]: '/usr/bin/ais_preview'
I1028 13:25:23.831096 1 init_google.cc:843] argv[1]: '--uid='
I1028 13:25:23.831099 1 init_google.cc:843] argv[2]: '--gid='
I1028 13:25:23.831102 1 init_google.cc:843] argv[3]: '--logtostderr'
I1028 13:25:23.831105 1 init_google.cc:843] argv[4]: '--config=/etc/config/config.yaml'
I1028 13:25:23.831515 1 prodhostname_userspace_monitor_impl.cc:191] Not running under a Borglet, disabling ProdHostname userspace monitoring.
I1028 13:25:23.831696 1 logger.cc:296] Enabling threaded logging for severity WARNING
I1028 13:25:23.831941 1 mlock.cc:216] mlock()-ed 0 bytes for BuildID, using 0 syscalls.
E1028 13:25:23.833441 1 ais_preview.cc:31] AIS failed to start: Unable to parse AES symmetric key: Invalid key data for "kid", key-0
```

The command used:

`$ openssl enc -aes-256-cbc -k secret -P -md sha1 -pbkdf2 -iter 100000 -salt`

Is this documentation deprecated?

https://cloud.google.com/service-mesh/docs/unified-install/options/end-user-auth