Server Chunk Saving Error

[WhyDoWeWonder]

Link/paste of stack trace

https://www.mediafire.com/file/rbx45x5bfalfg7m/2019-08-10-5.log/file
You can also simply just use code formatting in markdown!

We need all of the stack trace! Do not cut off parts of it. Please do not use attachments. Upload your logs to a paste site or paste directly here.

Please do not make reports when the report says "DO NOT REPORT THIS TO PAPER". These are simply messages informing you of lag, to find what is causing it. Ask for tips on Discord or IRC instead.

Plugin list:

A list of your plugins

Actions to reproduce (if known):

I really don't know
This may include a build schematic, a video, or detailed instructions to help reconstruct the issue

Paper build number:

paper-163
This can be found by running /version on your server. latest is not a proper version number; we require the output of /version so we can properly track down the issue.

[Spottedleaf]

It looks like a plugin may be performing saves async - #2308 would resolve.

[Chew]

As Spottedleaf stated, #2308 should solve this issue, however if your issue is not solved, please open a new issue with a new log, preferably uploaded to a site like paste.gg. Have a good day!