execution error - pcre limits exceeded (-8)

[Andrei Belov]

> On 21 Apr 2017, at 12:29, Dino Edwards <dino.edwards at mydirectmail.net> wrote:
> 
> Hi Andrei,
>  
> Which version of modsecurity are you using with nginx?
>  
> I’m using 2.9.1

It's worth to try libmodsecurity (aka ModSecurity 3.x) + nginx connector instead:

https://github.com/SpiderLabs/ModSecurity/tree/v3/master
https://github.com/SpiderLabs/ModSecurity-nginx

Please note that libmodsecurity does not support all of ModSecurity 2.x features:
https://github.com/SpiderLabs/ModSecurity/wiki/ModSecurity-version-3-%28earlier-release-candidate-1%29