谷歌FCM推送

php-lumen-fcm:  https://github.com/brozot/Laravel-FCM

Class 'FCM' not found

https://github.com/brozot/Laravel-FCM/issues/46

https://github.com/brozot/Laravel-FCM/issues/15

https://github.com/brozot/Laravel-FCM/issues/81

https://learnku.com/laravel/t/37743

https://blog.csdn.net/qq_37699037/article/details/79994480

本地证书问题

https://github.com/brozot/Laravel-FCM/issues/43

https://stackoverflow.com/questions/17478283/paypal-access-ssl-certificate-unable-to-get-local-issuer-certificate

外部doc

https://docs.rongcloud.cn/im/push/android/fcm/

postman

https://blog.csdn.net/a06_kassadin/article/details/78420416

NotRegistered

https://oomake.com/question/3677765