Error when trying to restore grafana from a backup

[ultibo]

Describe the bug

Error message when restoring influxdb & grafana from a backup

Context

• Hardware: VPS @ OVH and local virtualbox server
• YunoHost version: 4.3.2.2
• I have access to my server: Through SSH & through the webadmin
• Are you in a special context or did you perform some particular tweaking on your YunoHost instance?: no

Steps to reproduce

• on a fresh install
• create one user
• install app grafana with the admin beeing the only user
• install app netdata
• edit netdata exporting.conf to enable export to influxdb (this config is used)
• as root run : systemctl restart netdata.service
• edit influxdb.conf to enable the opentsdb database this config is used
• confirm the netdata data is visible in grafana https://XXXX/grafana/d/yunohost/NetData?refresh=5s&orgId=1
• perform a full backup
• on a fresh install with one user (same user name as before)
• upload the backup archive
• restore the backup

Expected behavior

• grafana, influxdb, and the data is restored

Current behavior

The grafana restore fails with an error message, see logs below
https://paste.yunohost.org/raw/uhibanebug