php - Fatal error: Class NativeSessionTokenStorage not found in Silex -


fatal error: class 'symfony\component\security\csrf\tokenstorage\nativesessiontokenstorage' not found in

i've installed formserviceprovider silex application. when try load page, error above appears. i've looked files, , i've found symfony folder, there's no component folder in it.

how can fix this?

i had reinstall security csrf using

composer require symfony/security-csrf

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