ERROR:bokeh.core.validation. check:E-1001 (BAD_COLUMN_NAME)

intend ： There is no such column name

The reason for this mistake is ：

         from DataFrame Format to ColumnDataSource Data time , The column name cannot be recognized , That's why I made a mistake .

The code before checking is ： contain index Column , Then directly substitute the source data into the drawing ;

Why can't you identify the listing , It should contain index Index columns , So there is a problem in recognition

Modification method ： take index The column becomes a normal column , That's all right. .

The changed code is ：

data_fin = data_fin.reset_index(drop=False)
source = ColumnDataSource(data_fin) #  Structural data