为什么明明写在里面了，还会出现这个错误

python - jinja2.exceptions.UndefinedError: there is no parent block called 'scripts' - Stack Overflow I get the following error when I try to run my app. File "/Users/chuangzhequan/microblog/app/templates/errors/500.html", line 1, in top-level template code {% extends "base.html" %} File "/ https://stackoverflow.com/questions/62181409/jinja2-exceptions-undefinederror-there-is-no-parent-block-called-scripts