Catch errors in 'fetch_video' fibers

src/invidious.cr

@@ -412,8 +412,7 @@ get "/captions/:id" do |env|
   begin
     video = get_video(id, client, PG_DB)
   rescue ex
-    error_message = ex.message
-    next templated "error"
+    halt env, status_code: 403
   end
 
   env.response.content_type = "application/json"

src/invidious/helpers.cr

@@ -241,9 +241,6 @@ def fetch_video(id, client)
     if info["reason"]?
       info = client.get("/get_video_info?video_id=#{id}&ps=default&eurl=&gl=US&hl=en&disable_polymer=1").body
       info = HTTP::Params.parse(info)
-      if info["reason"]?
-        raise info["reason"]
-      end
     end
 
     info_channel.send(info)
@@ -252,6 +249,10 @@ def fetch_video(id, client)
   html = html_channel.receive
   info = info_channel.receive
 
+  if info["reson"]?
+    raise info["reason"]
+  end
+
   title = info["title"]
   views = info["view_count"].to_i64
   author = info["author"]