Issue n8n installation - Failed to start Python task runner

[Martin73]

Server operating system version

Ubuntu 20.04.6 LTS

Plesk version and microupdate number

Plesk Obsidian 18.0.74

I run a VPS with Ubuntu 20.04 OS and Plesk Web Admin Edition. I now want to install and try out the n8n automation platform via Docker. This requires Python to be installed. I did this according to the following instructions. Except for point 6. I cannot find the path Service Plans > Hosting Plans > ServicePlanName > Hosting Parameters. This is probably located in Ples Web Pro Edition. Can anyone help me? Does anyone have experience installing n8n?

This is the error message: Failed to start Python task runner in internal mode. because Python 3 is missing from this system.