ModuleNotFoundError: No module named 'paddle.fluid'

问题遇到的现象和发生背景

我python代码可以在pycharm中正常使用，但我将其放入ros安装包以后，就会报错。提示：ModuleNotFoundError: No module named 'paddle.fluid'
但我在python代码运行时候是没问题的。大家有过类似问题吗？就解答。

用代码块功能插入代码，请勿粘贴截图
from paddle.fluid.dygraph.layers import Layer
from paddle.nn.functional.activation import softmax
from paddle.nn.layer.common import Dropout,Linear
运行结果及报错内容

报错内容：

/usr/lib/python3/dist-packages/requests/__init__.py:89: RequestsDependencyWarning: urllib3 (1.26.12) or chardet (3.0.4) doesn't match a supported version!
  warnings.warn("urllib3 ({}) or chardet ({}) doesn't match a supported "
Traceback (most recent call last):
  File "/home/wzf/demo02_ws/devel/lib/demo01/service.py", line 15, in <module>
    exec(compile(fh.read(), python_script, 'exec'), context)
  File "/home/wzf/demo02_ws/src/demo01/scripts/service.py", line 7, in <module>
    from paddle.fluid.dygraph.layers import Layer
ModuleNotFoundError: No module named 'paddle.fluid'

是没有paddle.fluid这个模块，检查一下有没有导入