selecting 1 day in explorer downsample gives error

[svefro]

unable to create downsample that runs 1 times each day

Steps to reproduce:
List the minimal actions needed to reproduce the behaviour.

1. in web gui select downsample under transform
2. under Schedule & Time Window select schedule 1 day
   on influx explorer 1.8.0 i get error message: Failed to deploy downsample trigger: Validation failed: Cron trigger must start with 'cron:' followed by a valid 6-field cron expression (seconds minutes hours day month weekday)
   on influx explorer 1.9.0 i get error message: Failed to deploy downsample trigger: Validation failed: invalid input

Expected behaviour:
create downsample task

Actual behaviour:
get error

Environment info:
InfluxDB 3 Core Version 3.9.3 running in docker pulled with "influxdata/influxdb3-ui" 6/14/2026
Tested on InfluxDB 3 Explorer version 1.8.0 and 1.9.0 running in docker pulled with "influxdata/influxdb3-ui" and "influxdata/influxdb3-ui:latest"

also when editing existing downsample timer. dialog shows "Create Downsample Trigger" and details are not filled in. save do not work. have to re create trigger