请问一下，老版HBuilder使用云打包一直提示打包失败，要怎么解决

Appid: H58CFF4AA <br>manifest.plus.plugins.ad.dcloud;<br><br>Exception in thread \"main\" java.lang.UnsupportedClassVersionError: org/apache/tools/ant/launch/Launcher : Unsupported major.minor version 52.0<br> at java.lang.ClassLoader.defineClass1(Native Method)<br> at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)<br> at java.lang.ClassLoader.defineClass(ClassLoader.java:615)<br> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)<br> at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)<br> at java.net.URLClassLoader.access$000(URLClassLoader.java:58)<br> at java.net.URLClassLoader$1.run(URLClassLoader.java:197)<br> at java.security.AccessController.doPrivileged(Native Method)<br> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)<br> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)<br> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)<br> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)<br>Could not find the main class: org.apache.tools.ant.launch.Launcher. Program will exit.<br>BuildConfigure Failed 20015<br><br>BuildConfigure Failed 20015