portainer: [BE] Unable to retrieve networks, stacks, versions, etc.

Bug description After Updating Portainer-EE to V2.17.1 and the Portainer_agent on my Synology NAS to 2.17.1, the Errors “Unable to retrieve stacks”, “Unable to retrieve networks”, “Unable to retrieve version”… pop up while accessing the Environment from the control panel.

Expected behavior The Environment should be accessible without errors and the Containers hosted within Docker should show up.

Portainer Logs portainer_agent on Synology NAS: https://pastebin.com/LMFM5hEB portainer-ee on VPS: https://pastebin.com/dWYPBkDR

Steps to reproduce the issue:

tbh I don’t know -_-

1. Update portainer-ee and portainer_agent(on Synology NAS) to V2.17.1
2. Login on the Portainer control panel
3. Click on the Environment of the NAS
4. See error

Technical details:

• Portainer version: V2.17.1
• Docker version (managed by Portainer): VPS: 20.10.23 - NAS: 20.10.3
• Kubernetes version (managed by Portainer): -
• Platform (windows/linux): VPS: Ubuntu 20.04 - NAS: DSM 7.1.1-42962 Update 4
• Command used to start Portainer (docker run -p 9443:9443 portainer/portainer): Regular Docker Commands as found in the Docs(except the volumes Binding on the NAS. That is customized)
• Browser: Safari, Opera(different machine)
• Use Case (delete as appropriate): Using Portainer at Home AND Using Portainer in a Commercial setup.
• Have you reviewed our technical documentation and knowledge base? Yes

Additional context The connection to the portainer_agent is handled over a Cloudflare tunnel(in order to not expose any Ports of my Home network) but accessing the hostname:port in a Browser outputs the regular API stating “{“message”:“Missing request signature headers”,“details”:“Unauthorized”}”

Edit: The Agent on a different VPS(Same Version as NAS) works completely fine…