[doc] Troubleshooting Guide

## Description

Need a document to help to solve common problems.

Content:
- configuration
- network
- data transfer
- misc

V1/V2 should be covered as much as possible.

No files or tests are named. Start by surveying the existing V1 and V2 documentation and collecting the common configuration, network, data-transfer, and miscellaneous problems the guide should cover. Done means a troubleshooting document addresses those areas for both versions as completely as the available material allows.

Scritto dal modello di indicizzazione a partire dal testo della issue.