We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Newsletters show unpublished events
### Describe the bug
Newsletters show unpublished events

### How to reproduce
Steps to reproduce the behaviour:
1. Check one of the newsletters of the last weeks

### Expected behaviour
Only published events should show.

### Additional context
This is probably because of the low number of events during these days.


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `website/newsletters/services.py`
Content:
```
1 import os
2 
3 from django.conf import settings
4 from django.template.loader import get_template
5 from django.utils import translation, timezone
6 
7 from events.models import Event
8 from members.models import Member
9 from newsletters import emails
10 from partners.models import Partner
11 from pushnotifications.models import Message, Category
12 
13 
14 def write_to_file(pk, lang, html_message):
15     """
16     Write newsletter to a file
17     """
18     cache_dir = os.path.join(settings.MEDIA_ROOT, "newsletters")
19     if not os.path.isdir(cache_dir):
20         os.makedirs(cache_dir)
21 
22     with open(os.path.join(cache_dir, f"{pk}_{lang}.html"), "w+") as cache_file:
23         cache_file.write(html_message)
24 
25 
26 def save_to_disk(newsletter, request):
27     """
28     Writes the newsletter as HTML to file (in all languages)
29     """
30     main_partner = Partner.objects.filter(is_main_partner=True).first()
31     local_partner = Partner.objects.filter(is_local_partner=True).first()
32 
33     html_template = get_template("newsletters/email.html")
34 
35     for language in settings.LANGUAGES:
36         translation.activate(language[0])
37 
38         context = {
39             "newsletter": newsletter,
40             "agenda_events": (
41                 newsletter.newslettercontent_set.filter(newsletteritem=None).order_by(
42                     "newsletterevent__start_datetime"
43                 )
44             ),
45             "main_partner": main_partner,
46             "local_partner": local_partner,
47             "lang_code": language[0],
48             "request": request,
49         }
50 
51         html_message = html_template.render(context)
52 
53         write_to_file(newsletter.pk, language[0], html_message)
54 
55 
56 def get_agenda(start_date):
57     end_date = start_date + timezone.timedelta(weeks=2)
58     base_events = Event.objects.filter(
59         start__gte=start_date, end__lt=end_date, published=True
60     ).order_by("start")
61     if base_events.count() < 10:
62         more_events = Event.objects.filter(end__gte=end_date).order_by("start")
63         return [*base_events, *more_events][:10]
64     return base_events
65 
66 
67 def send_newsletter(newsletter):
68     emails.send_newsletter(newsletter)
69     newsletter.sent = True
70     newsletter.save()
71     message = Message.objects.create(
72         title_nl=newsletter.title_nl,
73         title_en=newsletter.title_en,
74         body_nl="Tik om te bekijken",
75         body_en="Tap to view",
76         url=settings.BASE_URL + newsletter.get_absolute_url(),
77         category=Category.objects.get(key=Category.NEWSLETTER),
78     )
79     message.users.set(Member.current_members.all())
80     message.send()
81
```
--- 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/website/newsletters/services.py b/website/newsletters/services.py
--- a/website/newsletters/services.py
+++ b/website/newsletters/services.py
@@ -55,11 +55,12 @@
 
 def get_agenda(start_date):
     end_date = start_date + timezone.timedelta(weeks=2)
-    base_events = Event.objects.filter(
-        start__gte=start_date, end__lt=end_date, published=True
+    published_events = Event.objects.filter(published=True)
+    base_events = published_events.filter(
+        start__gte=start_date, end__lt=end_date
     ).order_by("start")
     if base_events.count() < 10:
-        more_events = Event.objects.filter(end__gte=end_date).order_by("start")
+        more_events = published_events.filter(end__gte=end_date).order_by("start")
         return [*base_events, *more_events][:10]
     return base_events

{"golden_diff": "diff --git a/website/newsletters/services.py b/website/newsletters/services.py\n--- a/website/newsletters/services.py\n+++ b/website/newsletters/services.py\n@@ -55,11 +55,12 @@\n \n def get_agenda(start_date):\n     end_date = start_date + timezone.timedelta(weeks=2)\n-    base_events = Event.objects.filter(\n-        start__gte=start_date, end__lt=end_date, published=True\n+    published_events = Event.objects.filter(published=True)\n+    base_events = published_events.filter(\n+        start__gte=start_date, end__lt=end_date\n     ).order_by(\"start\")\n     if base_events.count() < 10:\n-        more_events = Event.objects.filter(end__gte=end_date).order_by(\"start\")\n+        more_events = published_events.filter(end__gte=end_date).order_by(\"start\")\n         return [*base_events, *more_events][:10]\n     return base_events\n", "issue": "Newsletters show unpublished events\n### Describe the bug\r\nNewsletters show unpublished events\r\n\r\n### How to reproduce\r\nSteps to reproduce the behaviour:\r\n1. Check one of the newsletters of the last weeks\r\n\r\n### Expected behaviour\r\nOnly published events should show.\r\n\r\n### Additional context\r\nThis is probably because of the low number of events during these days.\r\n\n", "before_files": [{"content": "import os\n\nfrom django.conf import settings\nfrom django.template.loader import get_template\nfrom django.utils import translation, timezone\n\nfrom events.models import Event\nfrom members.models import Member\nfrom newsletters import emails\nfrom partners.models import Partner\nfrom pushnotifications.models import Message, Category\n\n\ndef write_to_file(pk, lang, html_message):\n    \"\"\"\n    Write newsletter to a file\n    \"\"\"\n    cache_dir = os.path.join(settings.MEDIA_ROOT, \"newsletters\")\n    if not os.path.isdir(cache_dir):\n        os.makedirs(cache_dir)\n\n    with open(os.path.join(cache_dir, f\"{pk}_{lang}.html\"), \"w+\") as cache_file:\n        cache_file.write(html_message)\n\n\ndef save_to_disk(newsletter, request):\n    \"\"\"\n    Writes the newsletter as HTML to file (in all languages)\n    \"\"\"\n    main_partner = Partner.objects.filter(is_main_partner=True).first()\n    local_partner = Partner.objects.filter(is_local_partner=True).first()\n\n    html_template = get_template(\"newsletters/email.html\")\n\n    for language in settings.LANGUAGES:\n        translation.activate(language[0])\n\n        context = {\n            \"newsletter\": newsletter,\n            \"agenda_events\": (\n                newsletter.newslettercontent_set.filter(newsletteritem=None).order_by(\n                    \"newsletterevent__start_datetime\"\n                )\n            ),\n            \"main_partner\": main_partner,\n            \"local_partner\": local_partner,\n            \"lang_code\": language[0],\n            \"request\": request,\n        }\n\n        html_message = html_template.render(context)\n\n        write_to_file(newsletter.pk, language[0], html_message)\n\n\ndef get_agenda(start_date):\n    end_date = start_date + timezone.timedelta(weeks=2)\n    base_events = Event.objects.filter(\n        start__gte=start_date, end__lt=end_date, published=True\n    ).order_by(\"start\")\n    if base_events.count() < 10:\n        more_events = Event.objects.filter(end__gte=end_date).order_by(\"start\")\n        return [*base_events, *more_events][:10]\n    return base_events\n\n\ndef send_newsletter(newsletter):\n    emails.send_newsletter(newsletter)\n    newsletter.sent = True\n    newsletter.save()\n    message = Message.objects.create(\n        title_nl=newsletter.title_nl,\n        title_en=newsletter.title_en,\n        body_nl=\"Tik om te bekijken\",\n        body_en=\"Tap to view\",\n        url=settings.BASE_URL + newsletter.get_absolute_url(),\n        category=Category.objects.get(key=Category.NEWSLETTER),\n    )\n    message.users.set(Member.current_members.all())\n    message.send()\n", "path": "website/newsletters/services.py"}], "after_files": [{"content": "import os\n\nfrom django.conf import settings\nfrom django.template.loader import get_template\nfrom django.utils import translation, timezone\n\nfrom events.models import Event\nfrom members.models import Member\nfrom newsletters import emails\nfrom partners.models import Partner\nfrom pushnotifications.models import Message, Category\n\n\ndef write_to_file(pk, lang, html_message):\n    \"\"\"\n    Write newsletter to a file\n    \"\"\"\n    cache_dir = os.path.join(settings.MEDIA_ROOT, \"newsletters\")\n    if not os.path.isdir(cache_dir):\n        os.makedirs(cache_dir)\n\n    with open(os.path.join(cache_dir, f\"{pk}_{lang}.html\"), \"w+\") as cache_file:\n        cache_file.write(html_message)\n\n\ndef save_to_disk(newsletter, request):\n    \"\"\"\n    Writes the newsletter as HTML to file (in all languages)\n    \"\"\"\n    main_partner = Partner.objects.filter(is_main_partner=True).first()\n    local_partner = Partner.objects.filter(is_local_partner=True).first()\n\n    html_template = get_template(\"newsletters/email.html\")\n\n    for language in settings.LANGUAGES:\n        translation.activate(language[0])\n\n        context = {\n            \"newsletter\": newsletter,\n            \"agenda_events\": (\n                newsletter.newslettercontent_set.filter(newsletteritem=None).order_by(\n                    \"newsletterevent__start_datetime\"\n                )\n            ),\n            \"main_partner\": main_partner,\n            \"local_partner\": local_partner,\n            \"lang_code\": language[0],\n            \"request\": request,\n        }\n\n        html_message = html_template.render(context)\n\n        write_to_file(newsletter.pk, language[0], html_message)\n\n\ndef get_agenda(start_date):\n    end_date = start_date + timezone.timedelta(weeks=2)\n    published_events = Event.objects.filter(published=True)\n    base_events = published_events.filter(\n        start__gte=start_date, end__lt=end_date\n    ).order_by(\"start\")\n    if base_events.count() < 10:\n        more_events = published_events.filter(end__gte=end_date).order_by(\"start\")\n        return [*base_events, *more_events][:10]\n    return base_events\n\n\ndef send_newsletter(newsletter):\n    emails.send_newsletter(newsletter)\n    newsletter.sent = True\n    newsletter.save()\n    message = Message.objects.create(\n        title_nl=newsletter.title_nl,\n        title_en=newsletter.title_en,\n        body_nl=\"Tik om te bekijken\",\n        body_en=\"Tap to view\",\n        url=settings.BASE_URL + newsletter.get_absolute_url(),\n        category=Category.objects.get(key=Category.NEWSLETTER),\n    )\n    message.users.set(Member.current_members.all())\n    message.send()\n", "path": "website/newsletters/services.py"}]}