Clearing the cache fails on environment with a hyphen #26884
Description
| Q | A |
|---|---|
| Bug report? | yes |
| Feature request? | no |
| BC Break report? | no |
| RFC? | no |
| Symfony version | 4.0.8 |
If I create an environment with a hyphen in the name, Symfony throws a fatal error when clearing the cache, and most likely when trying to do anything else. This is caused by there being a class created with an invalid name. For example, \ContainerEx9x7hC\srcSandbox-v1DebugProjectContainer for an environment of sandbox-v1.
Either this is a bug, or the format of environment names needs to be documented.