why print this log.rejected connection ends invalid user

[zzxap]

2020/12/04 11:13:40 192.168.1.153:54269 rejected v2ray.com/core/proxy/vmess/encoding: connection drained DrainSize = 218 12 9 > v2ray.com/core/proxy/vmess/encoding: invalid user > v2ray.com/core/proxy/vmess: Not Found
2020/12/04 11:13:40 [Info] [3862564489] v2ray.com/core/app/proxyman/inbound: connection ends > v2ray.com/core/proxy/vmess/inbound: invalid request from 192.168.1.153:54269 > v2ray.com/core/proxy/vmess/encoding: connection drained DrainSize = 218 12 9 > v2ray.com/core/proxy/vmess/encoding:
invalid user > v2ray.com/core/proxy/vmess: Not Found
2020/12/04 11:14:38 192.168.1.153:54255 rejected v2ray.com/core/proxy/vmess/encoding: failed to drain connection DrainSize = 218 12 8 > v2ray.com/core/proxy/vmess/encoding: invalid user > v2ray.com/core/proxy/vmess: Not Found
2020/12/04 11:14:38 [Info] [2494249709] v2ray.com/core/app/proxyman/inbound: connection ends > v2ray.com/core/proxy/vmess/inbound: invalid request from 192.168.1.153:54255 > v2ray.com/core/proxy/vmess/encoding: failed to drain connection DrainSize = 218 12 8 > v2ray.com/core/proxy/vmess/encoding: invalid user > v2ray.com/core/proxy/vmess: Not Found

[kslr]

uuid error