Error 500 in episode list

Dockerfile

@@ -1,4 +1,4 @@
-FROM lsiobase/alpine.python
+FROM python:2
 
 EXPOSE  6767
 

get_episodes.py

@@ -120,4 +120,7 @@ def add_new_episodes():
 
     # Store substitles from episodes we've just added
     new_scan_subtitles()
+    try:
         list_missing_subtitles()
+    except:
+        pass

views/episodes.tpl

@@ -155,9 +155,10 @@
 										%if episode[4] is not None:
 										%	actual_languages = ast.literal_eval(episode[4])
 										%else:
-											actual_languages = '[]'
+										%	actual_languages = '[]'
 										%end
-										%if actual_languages is not None:
+
+										%try:
 											%for language in actual_languages:
 												%if language[1] is not None:
 												<a data-episodePath="{{episode[1]}}" data-subtitlesPath="{{path_replace(language[1])}}" data-language="{{pycountry.languages.lookup(str(language[0])).alpha_3}}" data-sonarrSeriesId={{episode[5]}} data-sonarrEpisodeId={{episode[7]}} class="remove_subtitles ui tiny label">
@@ -170,9 +171,12 @@
 												</div>
 												%end
 											%end
+										%except:
+											%pass
 										%end
 										</td>
 										<td>
+										%try:
 											%if episode[6] is not None:
 											%	missing_languages = ast.literal_eval(episode[6])
 											%else:
@@ -186,6 +190,9 @@
 												</a>
 												%end
 											%end
+										%except:
+											%pass
+										%end
 										</td>
 									</tr>
 								%end