使用命令（java -jar CertificateDownloader.jar -k ${apiV3key} -m ${mchId} -f ${mchPrivateKeyFilePath} -s ${mchSerialNo} -o ${outputFilePath} ）下载时报错：java.io.FileNotFoundException: 'E:\test\test\apiclient_key.pem' (文件名、目录名或卷标语法不正确。)

使用官方代码下载时报另一个错误：picocli.CommandLine$ExecutionException: Error while running command (com.elias.CertificateDownloader@29ee9faa): java.lang.IllegalArgumentException: Illegal base64 character 2d