علت این ارور چیه؟

[blackincubus 1]

B4A Version: 8.00
Parsing code.    (0.00s)
Compiling code.    (0.02s)
	
ObfuscatorMap.txt file created in Objects folder.
Compiling layouts code.    (0.00s)
Organizing libraries.    (0.00s)
Generating R file.    (0.04s)
Compiling generated Java code.    (1.07s)
Convert byte code - optimized dex.    Error
java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
	at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
Exception in thread "main" 

لطفا راهنمایی کنید

وقتی میزنم نرم افزار اجرا شه این میاد