League\Flysystem\FileNotFoundException

[Semper Fidelis]

I've been getting this error inconsistently reported in my Server Logs. When I search for it, it seems like it's a resolved bug issue from the past so I don't know why I'm suddenly getting this report. I did move to a new server recently. Could it be ModSecrutiy rules being triggered?

If so, what's a good way to reproduce the issue?
Code:

League\Flysystem\FileNotFoundException: File not found at path: attachments/7/7519-00e342f70489c83212cadc276f138bfe.data...

Read more
League\Flysystem\FileNotFoundException

free plugins
minecraft paid for free
mcmarket
mc-market
free minecraft paid plugins
free minecraft plugins
spigotmc
SpigotMC
aac free
ewg free
Minecraft Premium Plugins
ewg free download
litebans free
epicworldgenerator free
free schematics
leaked schematics minecraft
schematics
schematics leaked
schematics free
minecraft schematics free
paid minecraft schematics free
paid minecraft schematics for free
free cracked plugins
free cracked minecraft plugins
plugins
featherboard download
featherboard plugin download
antiaura download
xenforo leaked
xenforo for free
xenforo addons