payload: {"action":"created","issue":{"url":"https://api.github.com/repos/oppia/oppia/issues/6213","repository_url":"https://api.github.com/repos/oppia/oppia","labels_url":"https://api.github.com/repos/oppia/oppia/issues/6213/labels{/name}","comments_url":"https://api.github.com/repos/oppia/oppia/issues/6213/comments","events_url":"https://api.github.com/repos/oppia/oppia/issues/6213/events","html_url":"https://github.com/oppia/oppia/issues/6213","id":406960156,"node_id":"MDU6SXNzdWU0MDY5NjAxNTY=","number":6213,"title":"Error arises on opening published exploration on local server","user":{"login":"rakshitkumarcse","id":32777813,"node_id":"MDQ6VXNlcjMyNzc3ODEz","avatar_url":"https://avatars2.githubusercontent.com/u/32777813?v=4","gravatar_id":"","url":"https://api.github.com/users/rakshitkumarcse","html_url":"https://github.com/rakshitkumarcse","followers_url":"https://api.github.com/users/rakshitkumarcse/followers","following_url":"https://api.github.com/users/rakshitkumarcse/following{/other_user}","gists_url":"https://api.github.com/users/rakshitkumarcse/gists{/gist_id}","starred_url":"https://api.github.com/users/rakshitkumarcse/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rakshitkumarcse/subscriptions","organizations_url":"https://api.github.com/users/rakshitkumarcse/orgs","repos_url":"https://api.github.com/users/rakshitkumarcse/repos","events_url":"https://api.github.com/users/rakshitkumarcse/events{/privacy}","received_events_url":"https://api.github.com/users/rakshitkumarcse/received_events","type":"User","site_admin":false},"labels":[{"id":247619534,"node_id":"MDU6TGFiZWwyNDc2MTk1MzQ=","url":"https://api.github.com/repos/oppia/oppia/labels/important","name":"important","color":"fbca04","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":10,"created_at":"2019-02-05T20:26:52Z","updated_at":"2019-02-06T06:42:09Z","closed_at":null,"author_association":"MEMBER","body":"<!--\r\n  - Thanks for taking the time to report a bug in the Oppia project.\r\n  - Before filing a new issue, please do a quick search to check that it hasn't\r\n  - already been filed on the [issue tracker](https://github.com/oppia/oppia/issues)._\r\n  -->\r\n\r\n**Description**\r\nError 500 arises on opening published exploration on local server.\r\n\r\n**To Reproduce**\r\nSteps to reproduce the behavior:\r\n 1. Create an exploration.\r\n 2. Publish it.\r\n 3. Open the exploration from the library or it's link.\r\n 4. See error\r\n\r\n**Observed behavior**\r\n![image](https://user-images.githubusercontent.com/32777813/52302117-3c0e5300-29b2-11e9-97d3-a13cb8c91ae0.png)\r\n\r\n\r\n**Expected behavior**\r\nNo error should arise. The exploration should play.\r\n\r\n**Server log**\r\n```\r\nINFO     2019-02-05 20:39:03,571 stubs.py:51] Sandbox prevented access to static file \"/media/hackerpro/871501f2-df6c-4a21-a03c-8b8e22d001d4/PROJECTS/GSOC/oppia/oppia/core/templates/dev/head/pages/exploration_player/feedback_popup_container_directive.html\"\r\nINFO     2019-02-05 20:39:03,571 stubs.py:52] Check that `application_readable: true` is set in app.yaml\r\nINFO     2019-02-05 20:39:03,575 base.py:478] Traceback (most recent call last):\r\n  File \"/media/hackerpro/871501f2-df6c-4a21-a03c-8b8e22d001d4/PROJECTS/GSOC/oppia/oppia_tools/google_appengine_1.9.67/google_appengine/lib/webapp2-2.5.2/webapp2.py\", line 570, in dispatch\r\n    return method(*args, **kwargs)\r\n  File \"/media/hackerpro/871501f2-df6c-4a21-a03c-8b8e22d001d4/PROJECTS/GSOC/oppia/oppia/core/domain/acl_decorators.py\", line 97, in test_can_play\r\n    return handler(self, exploration_id, **kwargs)\r\n  File \"/media/hackerpro/871501f2-df6c-4a21-a03c-8b8e22d001d4/PROJECTS/GSOC/oppia/oppia/core/controllers/reader.py\", line 237, in get\r\n    'pages/exploration_player/exploration_player.html')\r\n  File \"/media/hackerpro/871501f2-df6c-4a21-a03c-8b8e22d001d4/PROJECTS/GSOC/oppia/oppia/core/controllers/base.py\", line 399, in render_template\r\n    self.jinja2_env.get_template(filepath).render(**values))\r\n  File \"/media/hackerpro/871501f2-df6c-4a21-a03c-8b8e22d001d4/PROJECTS/GSOC/oppia/oppia_tools/google_appengine_1.9.67/google_appengine/lib/jinja2-2.6/jinja2/environment.py\", line 894, in render\r\n    return self.environment.handle_exception(exc_info, True)\r\n  File \"/media/hackerpro/871501f2-df6c-4a21-a03c-8b8e22d001d4/PROJECTS/GSOC/oppia/oppia/core/templates/dev/head/pages/exploration_player/exploration_player.html\", line 1, in top-level template code\r\n    {% extends 'pages/base.html' %}\r\nIOError: [Errno 13] file not accessible: '/media/hackerpro/871501f2-df6c-4a21-a03c-8b8e22d001d4/PROJECTS/GSOC/oppia/oppia/core/templates/dev/head/pages/exploration_player/feedback_popup_container_directive.html'\r\n\r\nERROR    2019-02-05 20:39:03,575 base.py:488] Exception raised: [Errno 13] file not accessible: '/media/hackerpro/871501f2-df6c-4a21-a03c-8b8e22d001d4/PROJECTS/GSOC/oppia/oppia/core/templates/dev/head/pages/exploration_player/feedback_popup_container_directive.html'\r\nINFO     2019-02-05 20:39:03,689 module.py:835] default: \"GET /explore/bv6mm4uWaYKq HTTP/1.1\" 500 21311\r\n```\r\n**NOTE**\r\nThis error does not arise when server is run with the --prod_env flag."},"comment":{"url":"https://api.github.com/repos/oppia/oppia/issues/comments/460917320","html_url":"https://github.com/oppia/oppia/issues/6213#issuecomment-460917320","issue_url":"https://api.github.com/repos/oppia/oppia/issues/6213","id":460917320,"node_id":"MDEyOklzc3VlQ29tbWVudDQ2MDkxNzMyMA==","user":{"login":"seanlip","id":10575562,"node_id":"MDQ6VXNlcjEwNTc1NTYy","avatar_url":"https://avatars0.githubusercontent.com/u/10575562?v=4","gravatar_id":"","url":"https://api.github.com/users/seanlip","html_url":"https://github.com/seanlip","followers_url":"https://api.github.com/users/seanlip/followers","following_url":"https://api.github.com/users/seanlip/following{/other_user}","gists_url":"https://api.github.com/users/seanlip/gists{/gist_id}","starred_url":"https://api.github.com/users/seanlip/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/seanlip/subscriptions","organizations_url":"https://api.github.com/users/seanlip/orgs","repos_url":"https://api.github.com/users/seanlip/repos","events_url":"https://api.github.com/users/seanlip/events{/privacy}","received_events_url":"https://api.github.com/users/seanlip/received_events","type":"User","site_admin":false},"created_at":"2019-02-06T06:42:09Z","updated_at":"2019-02-06T06:42:09Z","author_association":"MEMBER","body":"@vojtechjelinek -- could you PTAL at this?"}}
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