相关的错误提示：
Error:

RuntimeError('Request context not initialized.',)

Traceback:

Traceback (most recent call last):
File "C:\Users\Administrator\Anaconda3\lib\site-packages\bottle.py", line 1653, in fget
try: return ls.var
AttributeError: '_thread._local' object has no attribute 'var'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\Administrator\Anaconda3\lib\site-packages\bottle.py", line 954, in wsgi
out = self._cast(self._handle(environ))
File "C:\Users\Administrator\Anaconda3\lib\site-packages\bottle.py", line 907, in _cast
out = self.error_handler.get(out.status_code, self.default_error_handler)(out)
File "C:\Users\Administrator\Anaconda3\lib\site-packages\bottle.py", line 842, in default_error_handler
return tob(template(ERROR_PAGE_TEMPLATE, e=res))
File "C:\Users\Administrator\Anaconda3\lib\site-packages\bottle.py", line 3609, in template
return TEMPLATES[tplid].render(kwargs)
File "C:\Users\Administrator\Anaconda3\lib\site-packages\bottle.py", line 3399, in render
self.execute(stdout, env)
File "C:\Users\Administrator\Anaconda3\lib\site-packages\bottle.py", line 3386, in execute
eval(self.co, env)
File "<string>", line 17, in <module>
File "C:\Users\Administrator\Anaconda3\lib\site-packages\bottle.py", line 1249, in url
return self.urlparts.geturl()
File "C:\Users\Administrator\Anaconda3\lib\site-packages\bottle.py", line 165, in __get__
key, storage = self.key, getattr(obj, self.attr)
File "C:\Users\Administrator\Anaconda3\lib\site-packages\bottle.py", line 1655, in fget
raise RuntimeError("Request context not initialized.")
RuntimeError: Request context not initialized.