We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Certbot crashes if EFF e-mail submission endpoint is unavailable
Certbot will crash if the user's e-mail information can't be submitted to the EFF endpoint:

https://community.letsencrypt.org/t/issue-when-trying-to-create-certificate/59307/1

https://github.com/certbot/certbot/blob/master/certbot/eff.py#L74

It crashes with a somewhat relevant error if the endpoint is unavailable, but a confusing error if the endpoint returns something other than JSON. It should probably not crash at all in either case. If the endpoint specifically says that the user's e-mail address is malformed, that's probably worth stopping to report to the user, but if the endpoint simply doesn't reply usefully, it's probably preferable to continue since I wouldn't think we really want to make users wait in this situation.

(Adding the "bug" tag at least for the case where the endpoint returns a non-JSON reply because the error shown to the user in this case is unhelpful.)

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `certbot/eff.py`
Content:
```
1 """Subscribes users to the EFF newsletter."""
2 import logging
3 
4 import requests
5 import zope.component
6 
7 from certbot import constants
8 from certbot import interfaces
9 
10 
11 logger = logging.getLogger(__name__)
12 
13 
14 def handle_subscription(config):
15     """High level function to take care of EFF newsletter subscriptions.
16 
17     The user may be asked if they want to sign up for the newsletter if
18     they have not already specified.
19 
20     :param .IConfig config: Client configuration.
21 
22     """
23     if config.email is None:
24         if config.eff_email:
25             _report_failure("you didn't provide an e-mail address")
26         return
27     if config.eff_email is None:
28         config.eff_email = _want_subscription()
29     if config.eff_email:
30         subscribe(config.email)
31 
32 
33 def _want_subscription():
34     """Does the user want to be subscribed to the EFF newsletter?
35 
36     :returns: True if we should subscribe the user, otherwise, False
37     :rtype: bool
38 
39     """
40     prompt = (
41         'Would you be willing to share your email address with the '
42         "Electronic Frontier Foundation, a founding partner of the Let's "
43         'Encrypt project and the non-profit organization that develops '
44         "Certbot? We'd like to send you email about EFF and our work to "
45         'encrypt the web, protect its users and defend digital rights.')
46     display = zope.component.getUtility(interfaces.IDisplay)
47     return display.yesno(prompt, default=False)
48 
49 
50 def subscribe(email):
51     """Subscribe the user to the EFF mailing list.
52 
53     :param str email: the e-mail address to subscribe
54 
55     """
56     url = constants.EFF_SUBSCRIBE_URI
57     data = {'data_type': 'json',
58             'email': email,
59             'form_id': 'eff_supporters_library_subscribe_form'}
60     logger.debug('Sending POST request to %s:\n%s', url, data)
61     _check_response(requests.post(url, data=data))
62 
63 
64 def _check_response(response):
65     """Check for errors in the server's response.
66 
67     If an error occurred, it will be reported to the user.
68 
69     :param requests.Response response: the server's response to the
70         subscription request
71 
72     """
73     logger.debug('Received response:\n%s', response.content)
74     if response.ok:
75         if not response.json()['status']:
76             _report_failure('your e-mail address appears to be invalid')
77     else:
78         _report_failure()
79 
80 
81 def _report_failure(reason=None):
82     """Notify the user of failing to sign them up for the newsletter.
83 
84     :param reason: a phrase describing what the problem was
85         beginning with a lowercase letter and no closing punctuation
86     :type reason: `str` or `None`
87 
88     """
89     msg = ['We were unable to subscribe you the EFF mailing list']
90     if reason is not None:
91         msg.append(' because ')
92         msg.append(reason)
93     msg.append('. You can try again later by visiting https://act.eff.org.')
94     reporter = zope.component.getUtility(interfaces.IReporter)
95     reporter.add_message(''.join(msg), reporter.LOW_PRIORITY)
96
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/certbot/eff.py b/certbot/eff.py
--- a/certbot/eff.py
+++ b/certbot/eff.py
@@ -71,11 +71,14 @@
 
     """
     logger.debug('Received response:\n%s', response.content)
-    if response.ok:
-        if not response.json()['status']:
+    try:
+        response.raise_for_status()
+        if response.json()['status'] == False:
             _report_failure('your e-mail address appears to be invalid')
-    else:
+    except requests.exceptions.HTTPError:
         _report_failure()
+    except (ValueError, KeyError):
+        _report_failure('there was a problem with the server response')
 
 
 def _report_failure(reason=None):

{"golden_diff": "diff --git a/certbot/eff.py b/certbot/eff.py\n--- a/certbot/eff.py\n+++ b/certbot/eff.py\n@@ -71,11 +71,14 @@\n \n     \"\"\"\n     logger.debug('Received response:\\n%s', response.content)\n-    if response.ok:\n-        if not response.json()['status']:\n+    try:\n+        response.raise_for_status()\n+        if response.json()['status'] == False:\n             _report_failure('your e-mail address appears to be invalid')\n-    else:\n+    except requests.exceptions.HTTPError:\n         _report_failure()\n+    except (ValueError, KeyError):\n+        _report_failure('there was a problem with the server response')\n \n \n def _report_failure(reason=None):\n", "issue": "Certbot crashes if EFF e-mail submission endpoint is unavailable\nCertbot will crash if the user's e-mail information can't be submitted to the EFF endpoint:\r\n\r\nhttps://community.letsencrypt.org/t/issue-when-trying-to-create-certificate/59307/1\r\n\r\nhttps://github.com/certbot/certbot/blob/master/certbot/eff.py#L74\r\n\r\nIt crashes with a somewhat relevant error if the endpoint is unavailable, but a confusing error if the endpoint returns something other than JSON. It should probably not crash at all in either case. If the endpoint specifically says that the user's e-mail address is malformed, that's probably worth stopping to report to the user, but if the endpoint simply doesn't reply usefully, it's probably preferable to continue since I wouldn't think we really want to make users wait in this situation.\r\n\r\n(Adding the \"bug\" tag at least for the case where the endpoint returns a non-JSON reply because the error shown to the user in this case is unhelpful.)\n", "before_files": [{"content": "\"\"\"Subscribes users to the EFF newsletter.\"\"\"\nimport logging\n\nimport requests\nimport zope.component\n\nfrom certbot import constants\nfrom certbot import interfaces\n\n\nlogger = logging.getLogger(__name__)\n\n\ndef handle_subscription(config):\n    \"\"\"High level function to take care of EFF newsletter subscriptions.\n\n    The user may be asked if they want to sign up for the newsletter if\n    they have not already specified.\n\n    :param .IConfig config: Client configuration.\n\n    \"\"\"\n    if config.email is None:\n        if config.eff_email:\n            _report_failure(\"you didn't provide an e-mail address\")\n        return\n    if config.eff_email is None:\n        config.eff_email = _want_subscription()\n    if config.eff_email:\n        subscribe(config.email)\n\n\ndef _want_subscription():\n    \"\"\"Does the user want to be subscribed to the EFF newsletter?\n\n    :returns: True if we should subscribe the user, otherwise, False\n    :rtype: bool\n\n    \"\"\"\n    prompt = (\n        'Would you be willing to share your email address with the '\n        \"Electronic Frontier Foundation, a founding partner of the Let's \"\n        'Encrypt project and the non-profit organization that develops '\n        \"Certbot? We'd like to send you email about EFF and our work to \"\n        'encrypt the web, protect its users and defend digital rights.')\n    display = zope.component.getUtility(interfaces.IDisplay)\n    return display.yesno(prompt, default=False)\n\n\ndef subscribe(email):\n    \"\"\"Subscribe the user to the EFF mailing list.\n\n    :param str email: the e-mail address to subscribe\n\n    \"\"\"\n    url = constants.EFF_SUBSCRIBE_URI\n    data = {'data_type': 'json',\n            'email': email,\n            'form_id': 'eff_supporters_library_subscribe_form'}\n    logger.debug('Sending POST request to %s:\\n%s', url, data)\n    _check_response(requests.post(url, data=data))\n\n\ndef _check_response(response):\n    \"\"\"Check for errors in the server's response.\n\n    If an error occurred, it will be reported to the user.\n\n    :param requests.Response response: the server's response to the\n        subscription request\n\n    \"\"\"\n    logger.debug('Received response:\\n%s', response.content)\n    if response.ok:\n        if not response.json()['status']:\n            _report_failure('your e-mail address appears to be invalid')\n    else:\n        _report_failure()\n\n\ndef _report_failure(reason=None):\n    \"\"\"Notify the user of failing to sign them up for the newsletter.\n\n    :param reason: a phrase describing what the problem was\n        beginning with a lowercase letter and no closing punctuation\n    :type reason: `str` or `None`\n\n    \"\"\"\n    msg = ['We were unable to subscribe you the EFF mailing list']\n    if reason is not None:\n        msg.append(' because ')\n        msg.append(reason)\n    msg.append('. You can try again later by visiting https://act.eff.org.')\n    reporter = zope.component.getUtility(interfaces.IReporter)\n    reporter.add_message(''.join(msg), reporter.LOW_PRIORITY)\n", "path": "certbot/eff.py"}], "after_files": [{"content": "\"\"\"Subscribes users to the EFF newsletter.\"\"\"\nimport logging\n\nimport requests\nimport zope.component\n\nfrom certbot import constants\nfrom certbot import interfaces\n\n\nlogger = logging.getLogger(__name__)\n\n\ndef handle_subscription(config):\n    \"\"\"High level function to take care of EFF newsletter subscriptions.\n\n    The user may be asked if they want to sign up for the newsletter if\n    they have not already specified.\n\n    :param .IConfig config: Client configuration.\n\n    \"\"\"\n    if config.email is None:\n        if config.eff_email:\n            _report_failure(\"you didn't provide an e-mail address\")\n        return\n    if config.eff_email is None:\n        config.eff_email = _want_subscription()\n    if config.eff_email:\n        subscribe(config.email)\n\n\ndef _want_subscription():\n    \"\"\"Does the user want to be subscribed to the EFF newsletter?\n\n    :returns: True if we should subscribe the user, otherwise, False\n    :rtype: bool\n\n    \"\"\"\n    prompt = (\n        'Would you be willing to share your email address with the '\n        \"Electronic Frontier Foundation, a founding partner of the Let's \"\n        'Encrypt project and the non-profit organization that develops '\n        \"Certbot? We'd like to send you email about EFF and our work to \"\n        'encrypt the web, protect its users and defend digital rights.')\n    display = zope.component.getUtility(interfaces.IDisplay)\n    return display.yesno(prompt, default=False)\n\n\ndef subscribe(email):\n    \"\"\"Subscribe the user to the EFF mailing list.\n\n    :param str email: the e-mail address to subscribe\n\n    \"\"\"\n    url = constants.EFF_SUBSCRIBE_URI\n    data = {'data_type': 'json',\n            'email': email,\n            'form_id': 'eff_supporters_library_subscribe_form'}\n    logger.debug('Sending POST request to %s:\\n%s', url, data)\n    _check_response(requests.post(url, data=data))\n\n\ndef _check_response(response):\n    \"\"\"Check for errors in the server's response.\n\n    If an error occurred, it will be reported to the user.\n\n    :param requests.Response response: the server's response to the\n        subscription request\n\n    \"\"\"\n    logger.debug('Received response:\\n%s', response.content)\n    try:\n        response.raise_for_status()\n        if response.json()['status'] == False:\n            _report_failure('your e-mail address appears to be invalid')\n    except requests.exceptions.HTTPError:\n        _report_failure()\n    except (ValueError, KeyError):\n        _report_failure('there was a problem with the server response')\n\n\ndef _report_failure(reason=None):\n    \"\"\"Notify the user of failing to sign them up for the newsletter.\n\n    :param reason: a phrase describing what the problem was\n        beginning with a lowercase letter and no closing punctuation\n    :type reason: `str` or `None`\n\n    \"\"\"\n    msg = ['We were unable to subscribe you the EFF mailing list']\n    if reason is not None:\n        msg.append(' because ')\n        msg.append(reason)\n    msg.append('. You can try again later by visiting https://act.eff.org.')\n    reporter = zope.component.getUtility(interfaces.IReporter)\n    reporter.add_message(''.join(msg), reporter.LOW_PRIORITY)\n", "path": "certbot/eff.py"}]}