Problem with converting .xacro to .urdf in Windows 10 ROS

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I am using the command

rosrun xacro xacro.py <filename>.urdf.xacro > <filename>.urdf

as well as

rosrun xacro xacro --inorder <filename>.urdf.xacro > <filename>.urdf

I receive an error for both commands that says

xacro.py: error: expected exactly one input file as argument

which, for the second command, doesn't have the .py extension. The directory is valid and if I don't add the xacro.py or xacro --inorder part, the command runs without an error but doesn't produce a .urdf in the folder I want it in.

Sorry for the unclear description, I am not familiar with this software and am pretty new to coding. The reason I need to convert the .xacro to a .urdf file is because I am trying to make a GUI that shows one robot arm, however the .urdf file I have is for the entire robot. I followed this guide to use ROS on Windows 10.