This page describes some common issues that you might encounter involving
authentication and authorization.
This app isn't verified
If the OAuth consent screen displays the warning "This app isn't verified," your
app is requesting scopes that provide access to sensitive user data. If your
application uses sensitive scopes, your app must go through the
verification process
to remove that warning and other limitations. During the development phase, you
can continue past this warning by selecting
Advanced > Go to {Project Name}
(unsafe)
.
File not found error for credentials.json
When running the code sample, you might receive a "file not found" or "no such
file" error message regarding credentials.json.
This error occurs when you have not authorized the desktop application
credentials. To learn how to create credentials
for a desktop application, go to
Create credentials
.
After you create the credentials, make sure the downloaded JSON file is saved as
credentials.json
. Then move the file to your working directory.
Token has been expired or revoked
When running the code sample, you might receive a "Token has been expired" or
"Token has been revoked" error message.
This error occurs when an access token from the Google Authorization Server has
either expired or has been revoked. For information about potential causes
and fixes, see
Refresh token expiration
.
Python errors
The following are some common Python errors.
AttributeError: 'Module_six_moves_urllib_parse' object has no attribute 'urlparse'
This error can occur in Mac OSX where the default installation of the
six
module (a dependency of the Python library) is loaded before the one that pip
installed. To fix the issue, add pip's install location to the
PYTHONPATH
system environment variable:
Determine pip's install location:
pip show six | grep "Location:" | cut -d " " -f2
Make a note of this location because it's needed for the next step.
Add the following line to your
~/.bashrc
file, replacing
INSTALL_PATH
with the location determined from the
previous step:
export PYTHONPATH=$PYTHONPATH:
INSTALL_PATH
Reload your
~/.bashrc
file:
source ~/.bashrc
TypeError: sequence item 0: expected str instance, bytes found
This error is due to a bug in
httplib2
. To resolve this problem, upgrade
to the latest version of
httplib2
:
pip install --upgrade httplib2
Cannot uninstall 'six'
When running the
pip install
command, you might receive the following error:
Cannot uninstall 'six'. It is a distutils installed project and thus we
cannot accurately determine which files belong to it which would lead to
only a partial uninstall.
This error occurs on Mac OSX when pip attempts to upgrade the pre-installed
six
package. To work around this issue, add the flag
--ignore-installed six
to the
pip install
command.