diff --git a/config.yml b/config.yml
index 29dad26..a049ae7 100644
--- a/config.yml
+++ b/config.yml
@@ -27,7 +27,7 @@ pretalx:
   apiprefix: api
   apikey: bb770a53b15467dfb67c03d178004aca9e4819d6
   event: thsf-2023
-  schedule: 0.10
+  schedule: wip
 navbar:
   items:
     - name: Home
diff --git a/src/thsf/__init__.py b/src/thsf/__init__.py
index 210e022..02b1368 100644
--- a/src/thsf/__init__.py
+++ b/src/thsf/__init__.py
@@ -117,12 +117,12 @@ def index():
 @app.route('/planning', methods=['GET'])
 def planning():
   slots = get_slots()
-  for slot in slots["slots"]:
-    for speaker in slot["speakers"]:
-      speaker["biography"] = get_speaker_biography(speaker["name"])
+  for slot in slots.get("slots"):
+    for speaker in slot.get("speakers"):
+      speaker["biography"] = get_speaker_biography(speaker.get("name"))
   return render_template("planning.html",
-                         slots=sorted(slots["slots"],
-                         key=lambda slot: slot["slot"]["start"]),
+                         slots=sorted(slots.get("slots"),
+                         key=lambda slot: slot.get("slot").get("start")),
                          navbar=navbar.get_from_page(page="/planning"))
 
 @app.route('/place', methods=['GET'])
@@ -144,8 +144,8 @@ def goodies():
 def concerts():
   slots = get_slots()
   return render_template("planning.html",
-                         slots=sorted(slots["slots"],
-                         key=lambda slot: slot["slot"]["start"]),
+                         slots=sorted(slots.get("slots"),
+                         key=lambda slot: slot.get("slot").get("start")),
                          navbar=navbar.get_from_page(page="/concerts"),
                          filter=["concert", "dj set"])
 
@@ -153,8 +153,8 @@ def concerts():
 def workshops():
   slots = get_slots()
   return render_template("planning.html",
-                         slots=sorted(slots["slots"],
-                         key=lambda slot: slot["slot"]["start"]),
+                         slots=sorted(slots.get("slots"),
+                         key=lambda slot: slot.get("slot").get("start")),
                          navbar=navbar.get_from_page(page="/workshops"),
                          filter=["workshop"])
 
@@ -162,8 +162,8 @@ def workshops():
 def screenings():
   slots = get_slots()
   return render_template("planning.html",
-                         slots=sorted(slots["slots"],
-                         key=lambda slot: slot["slot"]["start"]),
+                         slots=sorted(slots.get("slots"),
+                         key=lambda slot: slot.get("slot").get("start")),
                          navbar=navbar.get_from_page(page="/screenings"),
                          filter=["screening"])
 
@@ -171,8 +171,8 @@ def screenings():
 def discussions():
   slots = get_slots()
   return render_template("planning.html",
-                         slots=sorted(slots["slots"],
-                         key=lambda slot: slot["slot"]["start"]),
+                         slots=sorted(slots.get("slots"),
+                         key=lambda slot: slot.get("slot").get("start")),
                          navbar=navbar.get_from_page(page="/discussions"),
                          filter=["panel discussion"])
 
@@ -180,8 +180,8 @@ def discussions():
 def exhibitions():
   slots = get_slots()
   return render_template("planning.html",
-                         slots=sorted(slots["slots"],
-                         key=lambda slot: slot["slot"]["start"]),
+                         slots=sorted(slots.get("slots"),
+                         key=lambda slot: slot.get("slot").get("start")),
                          navbar=navbar.get_from_page(page="/exhibitions"),
                          filter=["exhibition"])
 
@@ -189,8 +189,8 @@ def exhibitions():
 def talks():
   slots = get_slots()
   return render_template("planning.html",
-                         slots=sorted(slots["slots"],
-                         key=lambda slot: slot["slot"]["start"]),
+                         slots=sorted(slots.get("slots"),
+                         key=lambda slot: slot.get("slot").get("start")),
                          navbar=navbar.get_from_page(page="/talks"),
                          filter=["talk", "light talk"])