用户您好，请详细描述您所遇到的问题：
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系统软件版本： 不涉及
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问题涉及的技术领域：交叉编译环境docker 环境， docker 中安装ubuntu 20.04
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问题描述：
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按照官网指导搭建交叉编译环境时报错
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https://developer.horizon.cc/documents_rdk/linux_development/environment_build
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执行步骤如下
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cd rdk-gen
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sudo ./pack_image.sh
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执行上述命令是报错：mkdosfs: unable to open /dev/loop3p1: No such file or directory
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求助上述问题如何解决？
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复现概率：必现
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提供必要的问题日志：
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(Reading database … 152094 files and directories currently installed.)
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Preparing to unpack …/tros-xrrobot-msgs_2.0.0-20230901172822_arm64.deb …
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Unpacking tros-xrrobot-msgs (2.0.0-20230901172822) …
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Setting up tros-xrrobot-msgs (2.0.0-20230901172822) …
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###### Installed tros-xrrobot-msgs_2.0.0-20230901172822_arm64.deb ######
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###### Installing tros-xrrobot_2.0.0-20230901172816_arm64.deb ######
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Selecting previously unselected package tros-xrrobot.
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(Reading database … 152217 files and directories currently installed.)
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Preparing to unpack …/tros-xrrobot_2.0.0-20230901172816_arm64.deb …
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Unpacking tros-xrrobot (2.0.0-20230901172816) …
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Setting up tros-xrrobot (2.0.0-20230901172816) …
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###### Installed tros-xrrobot_2.0.0-20230901172816_arm64.deb ######
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###### Installing tros_2.1.3-20240307165139_arm64.deb ######
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Selecting previously unselected package tros.
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(Reading database … 152248 files and directories currently installed.)
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Preparing to unpack …/tros_2.1.3-20240307165139_arm64.deb …
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Unpacking tros (2.1.3-20240307165139) …
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Setting up tros (2.1.3-20240307165139) …
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###### Installed tros_2.1.3-20240307165139_arm64.deb ######
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Install hobot packages is finished
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Creating loop device…
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mkdosfs: unable to open /dev/loop3p1: No such file or directory
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root@CP:/home/x3/rdk-gen#
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软件上是否有做自定义修改：无