https://developers.google.com/chart/interactive/docs/gallery/calendar#a-simple-example
Uncaught Error: "(NaN,NaN,NaN") is not a valid RGB color calendar_fc73d1a9fc7a0e992c9b94e4a5a079cb.frame:115 Uncaught Error: "(NaN,NaN,NaN") is not a valid RGB color calendar_2cb4d3ef188cbdb9408e25a551097cd1.frame:115 Uncaught Error: "(NaN,NaN,NaN") is not a valid RGB color calendar_3a475286a7f8cdd5626b44c1e37234c2.frame:115 Uncaught Error: "(NaN,NaN,NaN") is not a valid RGB color calendar_4d84371ec06c568c19a2d06f6c30fd3a.frame:115 Uncaught Error: "(NaN,NaN,NaN") is not a valid RGB color -- You received this message because you are subscribed to the Google Groups "Google Visualization API" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-visualization-api. To view this discussion on the web visit https://groups.google.com/d/msgid/google-visualization-api/0d23ebb0-e376-429e-9652-a714bcec58b0%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
