Hi all, I wanted to share my recent experience with resolving an issue I encountered with ApexChart not displaying historical sensor data. This experience was a bit of a rollercoaster, but it ended on a positive note, so I thought I’d document it for anyone else who might be facing similar challenges.A few weeks ago, I noticed that my energy monitoring dashboard, which I’ve been using for months, suddenly stopped showing historical data. The chart would only display data for the current day, and any previous days would show as zero. At first, I was a bit puzzled because the sensor data itself was still being recorded correctly in Home Assistant. I even tried switching to a different graphing card, but the issue persisted, which led me to believe it wasn’t specific to ApexChart.I spent quite a bit of time troubleshooting, checking everything from my HA configuration to the network settings. I even considered whether it was a caching issue, but clearing the cache on multiple devices didn’t make a difference. The problem remained consistent across my phone, tablet, and desktop browser, which suggested it wasn’t device-specific.After some research and digging through the Home Assistant community forums, I stumbled upon a solution that involved adjusting the retention policy in my HA configuration. It turns out that the default data retention settings weren’t capturing the historical data as I expected. By modifying the recorder configuration to increase the retention period and ensuring that the data was being properly stored, I was able to resolve the issue.The process involved a bit of trial and error, but it taught me a valuable lesson about the importance of data retention settings in maintaining accurate historical data for visualizations. I’m relieved that everything is working smoothly now, and I can once again monitor my energy usage trends over time.If anyone else is experiencing similar issues, I’d recommend checking your data retention settings and ensuring that your sensors are configured to log data over the desired period. It’s a simple fix that can make a big difference in the functionality of your dashboards.Happy tinkering, and I hope this helps someone out there!