Unable to Launch Octane RoadRunner Server for PHP 8.0 - php

Question

Octane is installed with roadrunner while following the official guide, on the Ubuntu 18.04 server. Each step works as expected until the server is started:
php artisan octane:start --server=roadrunner --port=8181
Then, an error is received and the command exits. The complete stacktrace is attached:
INFO Server running…
Local: http://127.0.0.1:8181
Press Ctrl+C to stop the server
INFO [INFO] RoadRunner server started; version: 2.6.3, buildtime: 2021-12-03T11:37:00+0000
PHP Warning: require(/path/vendor/bin/bootstrap.php): Failed to open stream: No such file or directory in /path/vendor/bin/roadrunner-worker on line 18
PHP Fatal error: Uncaught Error: Failed opening required '/path/vendor/bin/bootstrap.php' (include_path='.:/usr/share/php') in /path/vendor/bin/roadrunner-worker:18
Stack trace:
#0 {main}
thrown in /path/vendor/bin/roadrunner-worker on line 18
INFO error occurred: WorkerAllocate:
INFO goridge_frame_receive: EOF, plugin: http.Plugin
ERROR 2021-12-07T12:01:53.048Z ERROR container/poller.go:16 vertex got an error {"id": "http.Plugin", "error": "WorkerAllocate:\n\tgoridge_frame_receive: EOF"}
ERROR github.com/spiral/endure/pkg/container.(*Endure).poll.func1
ERROR github.com/spiral/endure#v1.0.10/pkg/container/poller.go:16
ERROR handle_serve_command: WorkerAllocate:
ERROR goridge_frame_receive: EOF
Since roadrunner is based on go, I don't have much insights on how to navigate through the error. Please let me know if anyone has solved this issue before, thanks.

Answer 1

You should fix all warnings like this one: PHP Warning: require(/path/vendor/bin/bootstrap.php): Failed to open stream: No such file or directory in /path/vendor/bin/roadrunner-worker on line 18
These warnings appear in the stdout, but stdout is used as a process fd to communicate with the RR. That means if some data is sent to the stdout (like PHP warning) before RR initializes all processes (aka worker), RR will stop allocating the workers and exit with code 1.