Charts created from a single row display pefectly, but when a chart is created from 2 or more rows, the emebed chart displays blank - just a plain white space. These charts displayed perfectly a week or so ago, now they do not.
After creating new Blogger pages and new charts, I discovered that only charts created from single rows of data display. Also of note, some charts/sheets within a Googlesheet display perfectly, so I know it's not the sheet. In fact, some of the data on the same sheet display - only the data created from multiple rows do not display. Weirdness.
see: https://bikeswalescharts-home.blogspot.com/p/blog-page_25.html
and here is are my spreadsheets/data: https://docs.google.com/spreadsheets/d/1RJ1NAR1jsu1QB1vAgLq0_pdQTzTLkYYaady2OhaIciQ/edit?usp=sharing