Server Troubleshooting

For more information about the server software, see here.

Overview

If a parameter is not working properly, often the first place to check for issues is the server

Guide

1. Monitor the server log file

   1. Guide here

2. Any time you are troubleshooting the server, make sure to save your calibrations.json file in a secure location before going further

3. If the log file is not updating (via evolver tail -f)

   1. If you have manually edited the conf.yml file, most likely you have made an error somewhere there

      1. This could be formatting or a typo

      2. Copy a conf.yml that you know works (for example to base eVOLVER conf.yml)

         1. Using the server update guide as a reference

         2. ONLY copy the conf.yml to home/pi/evolver/evolver/

         3. Otherwise you will overwrite your calibration files

      3. Restart the server

         1. Stop following the server using ctrl+C

         2. Type restart evolver

         3. evolver tail -f

      4. The server log should now be updating each cycle

   2. If not, and you have not recently updated the evolver.py or other python files, update them

Relevant Forum Posts

Directly Connecting to Rpi over USB

Sudden Server Disconnections

Using Raspberry Pi 4 as a server

ssh Connection Refused