With cache warmup i have Warning: touch(): Unable to create file /var/task/var/cache/prod/Container3BKBjE9.legacy because Read-only file system

[cedric-r-mycelium]

Symfony 6.1 6.2

if a had - 'var/cache/prod/**' to servelerless.yaml package patterns i have this error

Warning: touch(): Unable to create file /var/task/var/cache/prod/Container3BKBjE9.legacy because Read-only file system

Only at the first run of lambda

[t-richard]

The .legacy extension lead me to think the cache you uploaded to lambda is not "fresh" and so Symfony tries to generate a new one. Did you include your var/cache/prod folder in your deployment package and did you run bin/console cache:warmup ---env=prod before the deployment ?

[cedric-r-mycelium]

i have a makefile for my deploy and in this file i have :
@php bin/console cache:warmup --env=prod --no-debug
sls deploy --stage=prod --region=eu-west-1

[cedric-r-mycelium]

👍 I found the root cause, it's append when you update Symfony in Symfony 6.2

[cedric-r-mycelium]

Now have this error on all version 6.*

[cedric-r-mycelium]

I found the probleme !!! it's only APP_DEBUG = true make this error !!!

[t-richard]

oh interesting, thanks for getting back to us with what you found !

Indeed the bridge is intended for production use and assumes you're running a APP_ENV=prod and APP_DEBUG=false because those versions generate stable var/cache folders.

But you're not the first one reporting something linked to running Symfony in a non-prod config, maybe we should reconsider that at some point 🤔

[cedric-r-mycelium]

May be add more warning on the Bref/Symfony documentation will be enough