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- Details:Addtime:2023-04-03
-
TypeError: The view function did not return a valid response. The return type must be a string, dict, tuple, Response instance, or WSGI callable, but it was a list. // Werkzeug Debugger TypeError
TypeError: The view function did not return a valid response. The return type must be a string, dict, tuple, Response instance, or WSGI callable, but it was a list.
Traceback (most recent call last)
File "C:\ProgramData\Miniconda3\lib\site-packages\flask\app.py", line 2095, in
__call__
def __call__(self, environ: dict, start_response: t.Callable) -> t.Any:
"""The WSGI server calls the Flask application object as the
WSGI application. This calls :meth:`wsgi_app`, which can be
wrapped to apply middleware.
"""
return self.wsgi_app(environ, start_response)
File "C:\ProgramData\Miniconda3\lib\site-packages\flask\app.py", line 2080, in
wsgi_app
try:
ctx.push()
response = self.full_dispatch_request()
except Exception as e:
error = e
response = self.handle_exception(e)
except: # noqa: B001
error = sys.exc_info()[1]
raise
return response(environ, start_response)
finally:
File "C:\ProgramData\Miniconda3\lib\site-packages\flask\app.py", line 2077, in
wsgi_app
ctx = self.request_context(environ)
error: t.Optional[BaseException] = None
try:
try:
ctx.push()
response = self.full_dispatch_request()
except Exception as e:
error = e
response = self.handle_exception(e)
except: # noqa: B001
error = sys.exc_info()[1]
File "C:\ProgramData\Miniconda3\lib\site-packages\flask\app.py", line 1526, in
full_dispatch_request
rv = self.preprocess_request()
if rv is None:
rv = self.dispatch_request()
except Exception as e:
rv = self.handle_user_exception(e)
return self.finalize_request(rv)
def finalize_request(
self,
rv: t.Union[ResponseReturnValue, HTTPException],
from_error_handler: bool = False,
File "C:\ProgramData\Miniconda3\lib\site-packages\flask\app.py", line 1545, in
finalize_request
with the `from_error_handler` flag. If enabled, failures in
response processing will be logged and otherwise ignored.
:internal:
"""
response = self.make_response(rv)
try:
response = self.process_response(response)
request_finished.send(self, response=response)
except Exception:
if not from_error_handler:
File "C:\ProgramData\Miniconda3\lib\site-packages\flask\app.py", line 1734, in
make_response
" response. The return type must be a string,"
" dict, tuple, Response instance, or WSGI"
f" callable, but it was a {type(rv).__name__}."
).with_traceback(sys.exc_info()[2]) from None
else:
raise TypeError(
"The view function did not return a valid"
" response. The return type must be a string,"
" dict, tuple, Response instance, or WSGI"
f" callable, but it was a {type(rv).__name__}."
)
TypeError: The view function did not return a valid response. The return type must be a string, dict, tuple, Response instance, or WSGI callable, but it was a list.
This is the Copy/Paste friendly version of the traceback.
The debugger caught an exception in your WSGI application. You can now look at the traceback which led to the error. If you enable JavaScript you can also use additional features such as code execution (if the evalex feature is enabled), automatic pasting of the exceptions and much more.Console Locked
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- Description
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