InfluxDB LXC - No Login to WebUI possible

[DKuefner]

Hi,
2 weeks ago I've installed an InfluxDB LXC Container on my Proxmox Cluster. Goal is to migrate data from an old instance. After installing and initial testing everything works well. Since then I'm feeding one Bucket with data via node-red and visualize them with Grafana. This also works.
However, today I'm not able to login to the WebUI anymore whereas Console access works.
Is this a known issue? Is there any solution?

Thanks
Dieter