Console:
[14:49:39 INFO] [PlasmoVoice]: Connection with secret a3b05685-dbc8-44ba-8667-b6ab427ad0a1
[14:49:39 INFO] [PlasmoVoice]: Optional[88cb2773-9bd4-3d7d-9aef-493eb5f83083] remote secret: Optional[fba6a631-4f6a-48e7-a394-3583e86e86b7]
[14:49:39 INFO] [PlasmoVoice]: Setting_0 server: VoiceRemoteServer(name=lobby, address=/[ip:port], aesEncryptionKeySet=false)
[14:49:39 WARN] [PlasmoVoice]: AES encryption for server VoiceRemoteServer(name=lobby, address=/[ip:port], aesEncryptionKeySet=false) (Setting_0) is not present. You need to set up the forwarding secret on backend servers: https://plasmovoice.com/docs/server/proxy/#specify-the-forwarding-secret

I installed this plugin in conjunction with the Velocity server and inserted the secret code from the Velocity plugin that was on the proxy into the Paper server configs, but it still asks to configure this secret code, although I have already done this.