Some requests made by directus-sync, particularly during the diff process, can be blocked by certain firewall
configurations.
You should see this log message if this is the case:
[12:40:43.095] ERROR (54159): [snapshot] Could not get the diff from the Directus instance
Check and adjust your firewall settings to ensure they don't block or interfere with directus-sync operations. This may involve whitelisting IP addresses or modifying rules to allow the necessary request patterns. More information in this issue.