Trigger looks fine (1 hour before sunset).
Is your location still correct?
Is your system OS time correct?
Is your time zone correct?
Did the automation trigger but a condition stopped it from running?
See here to check the trace: Troubleshooting automations - Home Assistant
Also in future, please post your config as text rather than an image of text. You can find out how to format it correctly for the forum here: How to help us help you - or How to ask a good question This will help us help you as we can copy/paste/edit your config to show you what may need changing.