Error in mode debug (prestashop 9)

[jaume36]

THIS:

SymfonyCacheClearer: Error while clearing cache for admin env dev: Call to undefined function PrestaShop\PrestaShop\Adapter\Cache\Clearer\exec()

My server no admits "exec" activation.

[compsoul.dev]

I’m not sure what you’re asking. If your server doesn’t support exec and PrestaShop uses it, as clearly shown in the error you shared, then it simply won’t work.
Unless you contact your hosting provider and they change the server settings.

You can clear the cache manually by deleting the contents of these folders:

var/cache/dev/*
var/cache/prod/*

You could also rewrite the function in PrestaShop, but that doesn’t make sense in the long run.

[PrestaHeroes.com]

This is known issue since Feburary, lear more here.  Tip: you can delete the folders (dev/prod) as PS will recreate  them.

[jaume36]

37 minutes ago, El Patron said:

Este es un problema conocido desde febrero. Más información aquí . Consejo: puedes eliminar las carpetas (dev/prod), ya que PS las recreará.

Gracias Patrón!