# Cannot access LTI Deep Link response in openedx

**URL:** <https://discuss.openedx.org/t/cannot-access-lti-deep-link-response-in-openedx/13241>\
**Category:** Development\
**Tags:** api, how-to, devstack, tutor, lti\
**Created:** [June 20, 2024, 3:07am UTC](https://discuss.openedx.org/t/cannot-access-lti-deep-link-response-in-openedx/13241 "2024-06-20T03:07:49Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![besonn](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.openedx.org/besonn/32/6963_2.png) [@besonn](https://discuss.openedx.org/u/besonn)\
**Post date:** [June 20, 2024, 3:07am UTC](https://discuss.openedx.org/t/cannot-access-lti-deep-link-response-in-openedx/13241/1 "2024-06-20T03:07:49Z")

</div>

Hi there, I was trapped in some errors about deploying an LTI tools in edx-platform.

I run both edx and LTI tools on a local machine. Edx uses port 8000 and 8001, and lti tools uses 9001.

For edx, I use:

```auto
tutor mounts add ./edx-platform
tutor images build openedx-dev
tutor dev launch

```

which is in [tutor dev](https://docs.tutor.edly.io/dev.html)

For LTI Tools, I use: [pylti1.3-flask-example](https://github.com/dmitry-viskov/pylti1.3-flask-example), which is running on `127.0.0.1:9001`

So, When I tried to launch deep link in openedx. It returns `Please check that you have course staff permissions and double check this block's LTI settings.` I am sure that I was using a staff account. And I am quite sure I have set `DCS_SESSION_COOKIE_SAMESITE = 'None' ` in edx-plarform/lms/env/.

I noticed that [https://github.com/openedx/xblock-lti-consumer/issues/218](https://github.com/openedx/xblock-lti-consumer/issues/218) mentioned the similar problems.

The error log in edx is below:

```auto
lms-1 | 2024-06-19 17:10:13,641 WARNING 114 [lti_consumer.plugin.views] [user None] [ip 172.19.X.X] views.py:496 - Permission on LTI Config <LtiConfiguration: [CONFIG_ON_XBLOCK] lti_1p3 - block-v1:edX+DemoX+Demo_Course+type@lti_consumer+block@ba1ec764026346b39f2cb233dce4f01a> denied for user <SimpleLazyObject: <django.contrib.auth.models.AnonymousUser object at 0x7f270d1e75e0>>:
lms-1 | 2024-06-19 17:10:13,648 DEBUG 114 [django.db.backends] [user None] [ip 172.19.X.X] utils.py:161 - (0.000) COMMIT; args=None; alias=default
lms-1 | [19/Jun/2024 17:10:13] "POST /api/lti_consumer/v1/lti/8/lti-dl/response HTTP/1.1" 403 7093

```

I masked my ip address in error log. How to solve this problem?

Thanks.