SecurityException for bouncycastle

Hi,
please could someone help me with following problem. When I want to run code in Idea it fails with this exception:

> [2018-04-09 09:04:58,920] ERROR java.lang.SecurityException: class "org.bouncycastle.jcajce.provider.symmetric.IDEA$Mappings"'s signer information does not match signer information of other classes in the same package (com.acision.ams.testing.testng.TestLogger)
[2018-04-09 09:04:58,921] ERROR [java.lang.ClassLoader.checkCerts(ClassLoader.java:898)
java.lang.ClassLoader.preDefineClass(ClassLoader.java:668)
java.lang.ClassLoader.defineClass(ClassLoader.java:761)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
java.net.URLClassLoader.access$100(URLClassLoader.java:73)
java.net.URLClassLoader$1.run(URLClassLoader.java:368)
java.net.URLClassLoader$1.run(URLClassLoader.java:362)
java.security.AccessController.doPrivileged(Native Method)
java.net.URLClassLoader.findClass(URLClassLoader.java:361)
java.lang.ClassLoader.loadClass(ClassLoader.java:424)
sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
java.lang.ClassLoader.loadClass(ClassLoader.java:357)
org.bouncycastle.jce.provider.BouncyCastleProvider.loadAlgorithms(Unknown Source)
org.bouncycastle.jce.provider.BouncyCastleProvider.setup(Unknown Source)
org.bouncycastle.jce.provider.BouncyCastleProvider.access$000(Unknown Source)
org.bouncycastle.jce.provider.BouncyCastleProvider$1.run(Unknown Source)
java.security.AccessController.doPrivileged(Native Method)
org.bouncycastle.jce.provider.BouncyCastleProvider.(Unknown Source)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:423)
java.lang.Class.newInstance(Class.java:442)

It runs successfully from cmdline with maven.
I am using sshj version 0.23. Thanks for any help!