Volume Scatter Doesn't Work In This Render

So, I decided to work on my old render. In this render there are two volume scatter box inside each other. One controls the environment fog effect thingy and one below cloud-layer effect. After a few months I decided to work on it again and improve it. Now, when I hit render a black mask layer appears the bottom part. <br><br>Is the file corrupted? Is there a bug with volume scatter? It was working a few months ago, but now nope. If you encountered with the same problem in the past let me know. <br><br><img src="/uploads/default/original/4X/3/f/0/3f0c25722e8faadd04dc1580d8763e5593b653b6.jpgstc=1" attachmentid=“435604” alt="" id=“vbattach_435604” class=“previewthumb”>

Attachments