Resolved ERR_EMPTY_RESPONSE when upgrade 12.5.30 to onyx

[jose]

When I try to install onyx see the capture Screenshot, at the moment skip a blank page with no response Screenshot . At 10 seconds I redirected again to the components, but of the current version not of the version of Onyx,

I have activated the errors in plesk, but neither does it give me any error follow the page with ERR_EMPTY_RESPONSE and the redirect

Please, I need a solution.

 

[jose]

Solved when running the installer via terminal, and he told me that there was another installation process in progress And could not be run for security , I killed it and executed it again, and now this perfect.

Used guides.
Can't Upgrade Plesk - BUSY: Update operation was locked by another update process - Design Haven
How to update or upgrade Plesk installation through the command line

Greetings.