0👍
You seem to be specifying a line chart:
<canvas id="base" class="chart-bar" chart-labels="vm.ts_labels" class="chart chart-line" ...
-----------------------------------------------------------------------------^
The readme for chartjs-plugin-trendline states that only bar charts are supported.
- Chartjs-Changing borderDash for specific gridLines in radar chart
- Chartjs-How to make dynamic chart with the next view? What libraries allows to customise exactly this like in my design?
Source:stackexchange.com