运行upernet_vit报错了

[loxoo6]

问题确认 Search before asking

• [X] 我已经查询历史issue(包括open与closed)，没有发现相似的bug。I have searched the open and closed issues and found no similar bug report.

Bug描述 Describe the Bug

复现环境 Environment

paddlepaddle:2.4.0 paddleseg:2.8

Bug描述确认 Bug description confirmation

• [X] 我确认已经提供了Bug复现步骤、代码改动说明、以及环境信息，确认问题是可以复现的。I confirm that the bug replication steps, code change instructions, and environment information have been provided, and the problem can be reproduced.

是否愿意提交PR？ Are you willing to submit a PR?

• [X] 我愿意提交PR！I'd like to help by submitting a PR!

[Sunting78]

请补充下运行命令

[shiyutang]

ms_deform_attn是外部新增算子，需要额外安装，请按照提示下载压缩包并安装ms_deform_attn算子。