Actually, I though I had resolved the error, but in actuality had disabled accessibility for the chart. When I enabled it again, the error is back.
One thing of note is that this code itself is running fine in an old project (Laravel 5.2, Highcharts 8.2.2). I basically copied and pasted this whole module into a Laravel 9 project, but am using Highcharts 9.0.1 now. In the old project, no errors at all and the accessibility works as intended.
Code: Select all
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