How to proxy /{prefix}** instead of /{prefix}/** ?

[northjah]

How to proxy /{prefix}** instead of /{prefix}/**?

How to make http://192.168.254.1:9080/boot accessible successfully?

I visit http://192.168.254.1:9080/boot error:

 ```
2025/03/27 03:22:56 [error] 62#62: *153977 lua entry thread aborted: runtime error: /usr/local/apisix/apisix/plugins/proxy-rewrite.lua:340: attempt to use zero-length uri
stack traceback:
coroutine 0:
        [C]: in function 'req_set_uri'
        /usr/local/apisix/apisix/plugins/proxy-rewrite.lua:340: in function 'phase_func'
        /usr/local/apisix/apisix/plugin.lua:1169: in function 'run_plugin'
        /usr/local/apisix/apisix/init.lua:689: in function 'http_access_phase'
        access_by_lua(nginx.conf:317):2: in main chunk, client: 172.22.80.1, server: _, request: "GET /boot HTTP/1.1", host: "192.168.254.1:9080"
2025/03/27 03:22:58 [error] 49#49: *153990 lua entry thread aborted: runtime error: /usr/local/apisix/apisix/plugins/proxy-rewrite.lua:340: attempt to use zero-length uri
stack traceback:
coroutine 0:
        [C]: in function 'req_set_uri'
        /usr/local/apisix/apisix/plugins/proxy-rewrite.lua:340: in function 'phase_func'
        /usr/local/apisix/apisix/plugin.lua:1169: in function 'run_plugin'
        /usr/local/apisix/apisix/init.lua:689: in function 'http_access_phase'
        access_by_lua(nginx.conf:317):2: in main chunk, client: 172.22.80.1, server: _, request: "GET /boot HTTP/1.1", host: "192.168.254.1:9080"
2025/03/27 03:22:59 [error] 57#57: *154042 lua entry thread aborted: runtime error: /usr/local/apisix/apisix/plugins/proxy-rewrite.lua:340: attempt to use zero-length uri
stack traceback:
 ``` 

my route configuration json:

 ```
{
  "uri": "/boot**",
  "name": "test boot route",
  "methods": [
    "GET",
    "POST",
    "PUT",
    "DELETE",
    "PATCH",
    "HEAD",
    "OPTIONS",
    "CONNECT",
    "TRACE"
  ],
  "plugins": {
    "proxy-rewrite": {
      "regex_uri": [
        "/boot(.*)$",
        "$1"
      ]
    }
  },
  "upstream": {
    "nodes": [
      {
        "host": "172.22.80.1",
        "port": 8900,
        "weight": 1
      }
    ],
    "timeout": {
      "connect": 6,
      "send": 6,
      "read": 6
    },
    "type": "roundrobin",
    "scheme": "http",
    "pass_host": "pass",
    "keepalive_pool": {
      "idle_timeout": 60,
      "requests": 1000,
      "size": 320
    }
  },
  "labels": {
    "API_VERSION": "1.0"
  },
  "enable_websocket": true,
  "status": 1
}
 ``` 

my version:

[northjah]

have already solved it, thank .

"regex_uri": [
  "^/boot/?(.*)$",
  "/$1"
]