If not using the pip method to install package you may also try creating a new conda environment step by step with the following instructions: conda create --name gmx_sdk python=3.10 conda activate ...
Proxmoxer is a python wrapper around the Proxmox REST API v2. It currently supports the Proxmox services of Proxmox Virtual Environment (PVE), Proxmox Mail Gateway (PMG), and Proxmox Backup Server ...