ERR_CRYPTO_CUSTOM_ENGINE_NOT_SUPPORTED

请求了一个 OpenSSL 引擎（例如，通过 clientCertEngine 或 privateKeyEngine TLS 选项），但所使用的 OpenSSL 版本不支持该引擎，这很可能是由于编译时的标志 OPENSSL_NO_ENGINE 所致。

🌐 An OpenSSL engine was requested (for example, through the clientCertEngine or privateKeyEngine TLS options) that is not supported by the version of OpenSSL being used, likely due to the compile-time flag OPENSSL_NO_ENGINE.