While running the MIT App Inventor locally I got the following error when giving ant command.
ubuntu@ubuntu-Lenovo-IdeaPad-S540-15IWL-D:~/mitapp/appinventor-sources/appinventor$ ant
Buildfile: /home/ubuntu/mitapp/appinventor-sources/appinventor/build.xml
all:
init:
MakeWarLibsDir:
common_CommonUtils:
init:
CommonUtils:
common_CommonVersion:
init:
CommonVersion:
components_CommonConstants:
init:
CommonConstants:
WarLibs:
AiSharedLib:
AiServerLib:
components_AndroidRuntime:
common_CommonVersion:
init:
CommonVersion:
init:
HtmlEntities:
Barcode:
CopyComponentLibraries:
common_CommonUtils:
init:
CommonUtils:
CommonConstants:
AnnotationProcessors:
AndroidRuntime.uptodate:
AndroidRuntime:
AiClientLib:
AiRebindLib:
blocklyeditor_BlocklyTranslationGenerator:
CheckBlocklyTranslations:
init:
CheckBlocklyCompile:
BlocklyCompile:
BlocklyTranslationGenerator:
CheckDocs:
BuildDocs:
[exec] Execute failed: java.io.IOException: Cannot run program "bundle" (in directory "/home/ubuntu/mitapp/appinventor-sources/appinventor/docs/markdown"): error=2, No such file or directory
[exec] Execute failed: java.io.IOException: Cannot run program "bundle" (in directory "/home/ubuntu/mitapp/appinventor-sources/appinventor/docs/markdown"): error=2, No such file or directory
CopyToBuildWar:
CheckYaClientApp:
YaClientApp:
[java] Loading inherited module 'com.google.appinventor.YaClient-dev'
[java] Loading inherited module 'com.google.appinventor.YaClient'
[java] [ERROR] Unexpected error while processing XML
[java] java.lang.UnsupportedClassVersionError: com/google/appinventor/rebind/ExtendedServiceProxyGenerator has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 52.0
[java] at java.lang.ClassLoader.defineClass1(Native Method)
[java] at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
[java] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[java] at java.net.URLClassLoader.defineClass(URLClassLoader.java:473)
[java] at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
[java] at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
[java] at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
[java] at java.security.AccessController.doPrivileged(Native Method)
[java] at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
[java] at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
[java] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
[java] at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
[java] at com.google.gwt.dev.cfg.ModuleDefSchema$ClassAttrCvt.convertToArg(ModuleDefSchema.java:899)
[java] at com.google.gwt.dev.util.xml.HandlerArgs.convertToArg(HandlerArgs.java:64)
[java] at com.google.gwt.dev.util.xml.HandlerMethod.invokeBegin(HandlerMethod.java:221)
[java] at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.startElement(ReflectiveParser.java:296)
[java] at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
[java] at org.apache.xerces.impl.dtd.XMLDTDValidator.startElement(Unknown Source)
[java] at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
[java] at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
[java] at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
[java] at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
[java] at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
[java] at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
[java] at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
[java] at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
[java] at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse(ReflectiveParser.java:349)
[java] at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$200(ReflectiveParser.java:70)
[java] at com.google.gwt.dev.util.xml.ReflectiveParser.parse(ReflectiveParser.java:431)
[java] at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:316)
[java] at com.google.gwt.dev.cfg.ModuleDefSchema$BodySchema.__inherits_begin(ModuleDefSchema.java:501)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[java] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[java] at java.lang.reflect.Method.invoke(Method.java:498)
[java] at com.google.gwt.dev.util.xml.HandlerMethod.invokeBegin(HandlerMethod.java:230)
[java] at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.startElement(ReflectiveParser.java:296)
[java] at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
[java] at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)
[java] at org.apache.xerces.impl.dtd.XMLDTDValidator.emptyElement(Unknown Source)
[java] at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
[java] at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
[java] at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
[java] at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
[java] at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
[java] at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
[java] at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
[java] at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
[java] at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse(ReflectiveParser.java:349)
[java] at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$200(ReflectiveParser.java:70)
[java] at com.google.gwt.dev.util.xml.ReflectiveParser.parse(ReflectiveParser.java:431)
[java] at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:316)
[java] at com.google.gwt.dev.cfg.ModuleDefLoader.load(ModuleDefLoader.java:243)
[java] at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:193)
[java] at com.google.gwt.dev.cfg.ModuleDefLoader.loadFromResources(ModuleDefLoader.java:151)
[java] at com.google.gwt.dev.cfg.ModuleDefLoader.loadFromClassPath(ModuleDefLoader.java:126)
[java] at com.google.gwt.dev.Compiler.compile(Compiler.java:139)
[java] at com.google.gwt.dev.Compiler$1.run(Compiler.java:118)
[java] at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:55)
[java] at com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50)
[java] at com.google.gwt.dev.Compiler.main(Compiler.java:125)
BUILD FAILED
/home/ubuntu/mitapp/appinventor-sources/appinventor/build.xml:16: The following error occurred while executing this line:
/home/ubuntu/mitapp/appinventor-sources/appinventor/appengine/build.xml:624: Java returned: 1
Total time: 4 seconds
If anyone have faced such issue please help me solving this error.