age : No identity matched any of the recipients

Hi

I've tried to generate a proof but without success.
My key is present in my keys profile page but I get this error :
```
You have specified the file which doesn't contain valid private key.
Your private key doesn't match your public key in GitHub. It could happen if you've changed local ssh key recently.
Internal error:
age: error: no identity matched any of the recipients
age: report unexpected or unhelpful errors at https://fluence.chat
```

Have a nice day