OpenWRT 安装一个东西后出现了此问题，初步推测是权限出现问题。

解决方案#

输入命令：

nano /usr/share/rpcd/acl.d/luci-base.json

清空里面的所有内容，然后复制以下内容粘贴进去：

{
    "unauthenticated": {
        "description": "Allow system feature probing",
        "read": {
            "ubus": {
                "luci": [ "getFeatures" ]
            }
        }
    },

    "luci-base": {
        "description": "Grant access to basic LuCI procedures",
        "read": {
            "file": {
                "/": [ "list" ],
                "/*": [ "list" ]
            },
            "ubus": {
                "file": [ "list" ],
                "uci": [ "changes", "get" ]
            }
        },
        "write": {
            "cgi-io": [ "upload" ],
            "file": {
                "/etc/luci-uploads/*": [ "write" ]
            },
            "ubus": {
                "file": [ "remove" ],
                "uci": [ "add", "apply", "confirm", "delete", "order", "rename", "set" ]
            }
        }
    },

    "uci-access": {
        "description": "Grant uci write access to all configurations",
        "read": {
            "uci": [ "*" ]
        },
        "write": {
            "uci": [ "*" ]
        }
    },

    "luci-base-network-status": {
        "description": "Grant access to network status information",
        "read": {
            "ubus": {
                "luci-rpc": [ "getBoardJSON", "getHostHints", "getNetworkDevices", "getWirelessDevices" ],
                "network": [ "get_proto_handlers" ],
                "network.interface": [ "dump" ]
            },
            "uci": [ "luci", "network", "wireless" ]
        }
    }
}

输入 Ctrl + O 保存，OpenWRT 安装一个东西后出现了此问题，初步推测是权限出现问题。

解决方案#

输入命令：

nano /usr/share/rpcd/acl.d/luci-base.json

清空里面的所有内容，然后复制以下内容粘贴进去：

{
    "unauthenticated": {
        "description": "Allow system feature probing",
        "read": {
            "ubus": {
                "luci": [ "getFeatures" ]
            }
        }
    },

    "luci-base": {
        "description": "Grant access to basic LuCI procedures",
        "read": {
            "file": {
                "/": [ "list" ],
                "/*": [ "list" ]
            },
            "ubus": {
                "file": [ "list" ],
                "uci": [ "changes", "get" ]
            }
        },
        "write": {
            "cgi-io": [ "upload" ],
            "file": {
                "/etc/luci-uploads/*": [ "write" ]
            },
            "ubus": {
                "file": [ "remove" ],
                "uci": [ "add", "apply", "confirm", "delete", "order", "rename", "set" ]
            }
        }
    },

    "uci-access": {
        "description": "Grant uci write access to all configurations",
        "read": {
            "uci": [ "*" ]
        },
        "write": {
            "uci": [ "*" ]
        }
    },

    "luci-base-network-status": {
        "description": "Grant access to network status information",
        "read": {
            "ubus": {
                "luci-rpc": [ "getBoardJSON", "getHostHints", "getNetworkDevices", "getWirelessDevices" ],
                "network": [ "get_proto_handlers" ],
                "network.interface": [ "dump" ]
            },
            "uci": [ "luci", "network", "wireless" ]
        }
    }
}

输入 Ctrl + O 保存，然后 Ctrl + X 退出，再输入 reboot 回车，等重启后即可解决。然后 Ctrl + X 退出，再输入 reboot 回车，等重启后即可解决。