Is not compatible with the latest Heroku stack

[pslyman]

I got this after Heroku forced an upgrade of their stack. The log didn't give any other information that I'm aware of. Bit of a black box on this one.

[orieuxe]

Hi, I just upgraded a Symfony + angular app to heroku-20 stack. I was previously on the heroku-18 one. The first build went well on client side as well as server side. I don't think your issue is related with this buildpack. Here are my logs extracts :

-----> Building on the Heroku-20 stack
-----> Subdir buildpack app detected
-----> Subdir buildpack in client
-----> Node.js app detected
-----> Installing binaries
       engines.node (package.json):  14.15.1
       engines.npm (package.json):   6.14.8
-----> Installing dependencies
-----> Build succeeded!
Launching...

-----> Building on the Heroku-20 stack
-----> Subdir buildpack app detected
-----> Subdir buildpack in server
-----> PHP app detected
-----> Installing platform packages...
       - php (7.4.14)
       - composer (1.10.19)
       - apache (2.4.46)
       - nginx (1.18.0)
-----> Installing dependencies...
-----> Launching...

[edmorley]

This issue can be closed, since this buildpack is compatible with Heroku-20. The root cause of the error in the OP must have been something else.