Urgent issue with uploading large files revo 2.2.0

I'm trying to upload a video of 45 mega. It's uploaded successfully but the problem is that when i tried to do any query on the modx database i got this error call to fetch on a non object. This is not happening when i uploaded small files up to 25 Mega.
The modx upload_size limit is about one Giga
And this is the php settings:
upload_max_filesize 500M
post_max_size 500M
max_input_time -1
max_execution_time -1
memory_limit -1

I'm not sure what's the issue.I think it may be that the xPdo connection expired or lost ??

Need Help urgently.

Thanks,
Mohamed

Can you paste the actual error here? I don't see what uploading a file has to do with any MODx database queries.

<b>Fatal error</b>: Call to a member function fetch() on a non-object in <b>/home/igo4sale/public_html/core/cache/includes/elements/modsnippet/89.include.cache.php</b> on line <b>50</b>

This only happened when files are larger than 45 mega

What is snippet #86? Look in the Elements tab to see which one it is.

This is the snippet which upload the file and do some database queries