Structured data

When I pass the event link on Google’s structured data testing tool, it has some errors.
1 – In the description it shows the text of the event description with the block editor markings. This does not seem appropriate, since it should display “plain text”.
Example: https://search.google.com/structured-data/testing-tool/u/0/?url=https://espacobambui.com.br/eventos/curso-online-de-cone-chines-05 -de-june / # url = https% 3A% 2F% 2Fespacobambui.com.br% 2Feventos% 2Follow-online-cone-chinese-05-de-junio% 2F% 3F1