'Looker Studio has encountered a system error' on all of my dashboards' first page

[bi_rad]

All of my reports' first page charts throw this 'Looker Studio has encountered a system error' error and when i refresh the webpage they start reflecting the data. how can i fix it?

also, is there any way i can improve the loading speed of the charts.

i have 2 MySQL tables as data sources, 5 blends, and 7 filters.

[pvogt38]

I am having a similar problem.  More specifically, I have a single page looker report which has some metrics and a chart.  I have embedded the url for the report into a slideshow (created using reveal.js)   Often when the slideshow gets around to the looker report, it renders with a "system error" where the chart should be.  This is intermittent but happens about half the time.  (the slideshow repeats itself)    -paul

[SofiaSSR]

I have the same issue, a single page with metrics and a chart, I embed it using iframe in WordPress. All looks good in Lookerstudio, it renders with a "system error" where the chart should be, when I press the controls 'order by' and select other order, it renders normally, and sometimes when I refresh the chart renders well.