ERROR: Failed to clean the workspace
09:05:02 java.io.IOException: java.lang.reflect.InvocationTargetException
09:05:02 	at hudson.Util.isSymlinkJava7(Util.java:360)
09:05:02 	at hudson.Util.isSymlink(Util.java:325)
09:05:02 	at hudson.Util.deleteRecursive(Util.java:291)
09:05:02 	at hudson.Util.deleteContentsRecursive(Util.java:203)
09:05:02 	at hudson.Util.deleteRecursive(Util.java:292)
09:05:02 	at hudson.Util.deleteContentsRecursive(Util.java:203)
09:05:02 	at hudson.Util.deleteRecursive(Util.java:292)
09:05:02 	at hudson.Util.deleteContentsRecursive(Util.java:203)
09:05:02 	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$2.execute(CliGitAPIImpl.java:393)
09:05:02 	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$1.call(RemoteGitImpl.java:153)
09:05:02 	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$1.call(RemoteGitImpl.java:146)
09:05:02 	at hudson.remoting.UserRequest.perform(UserRequest.java:118)
09:05:02 	at hudson.remoting.UserRequest.perform(UserRequest.java:48)
09:05:02 	at hudson.remoting.Request$2.run(Request.java:328)
09:05:02 	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
09:05:02 	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
09:05:02 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
09:05:02 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
09:05:02 	at java.lang.Thread.run(Thread.java:745)
09:05:02 Caused by: java.lang.reflect.InvocationTargetException
09:05:02 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
09:05:02 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
09:05:02 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
09:05:02 	at java.lang.reflect.Method.invoke(Method.java:606)
09:05:02 	at hudson.Util.isSymlinkJava7(Util.java:355)
09:05:02 	... 18 more
09:05:02 Caused by: java.nio.file.InvalidPathException: Malformed input or input contains unmappable chacraters: /var/lib/jenkins/workspace/My-project/sub-folder/prototype/icons/skylleanl??g.svg
09:05:02 	at sun.nio.fs.UnixPath.encode(UnixPath.java:147)
09:05:02 	at sun.nio.fs.UnixPath.<init>(UnixPath.java:71)
09:05:02 	at sun.nio.fs.UnixFileSystem.getPath(UnixFileSystem.java:281)
09:05:02 	at java.io.File.toPath(File.java:2186)
09:05:02 	... 23 more