健全的网络扫描仪-设备繁忙

Question

Sane 将检测网络扫描仪并始终显示此消息：Device busy。

我已尝试重新启动机器和扫描仪。

$ scanimage
Output format is not set, using pnm as a default.
scanimage: open of device escl:https://172.18.14.250:443 failed: Device busy

$ scanimage -L
device `escl:https://172.18.14.250:443' is a ESCL RICOH SP 377SFNwX (cf3d23) SSL flatbed scanner
device `escl:http://172.18.14.250:631' is a ESCL RICOH SP 377SFNwX (cf3d23) flatbed scanner

Ubuntu 20.04

使用以下方式安装软件包： sudo apt install sane libsane libsane-common libsane-hpaio

可能出了什么问题？