当PHP中的令牌进行编码和解码时,一切正常.但是当我从python编码令牌并用PHP解码它们时,Firebase库返回一个错误：

Firebase\JWT\SignatureInvalidException Object
(
    [message:protected] => Signature verification Failed
    [string:Exception:private] => 
    [code:protected] => 0
    [file:protected] => /var/www/vendor/firebase/PHP-jwt/src/JWT.PHP
    [line:protected] => 110
    ...

编码python代码如下

import jwt
...
payload = {'sub': self.client.id,'exp': (datetime.now() + timedelta(days=1)).timestamp()}
context['token'] = jwt.encode(payload,os.environ['JWT_KEY'],algorithm='HS256')

而PHP代码如下

$key = getenv("JWT_KEY");
return (array) \Firebase\JWT\JWT::decode($token,$key,array('HS256'));