Issue with CLI

[aion-ollie]

The issue is when I run the following command:
./web3j-aion -a gettersetter-1.0-SNAPSHOT.abi -b gettersetter-1.0-SNAPSHOT.jar -o ~/Desktop -p gettersetter

I get the following error:
Exception in thread "main" java.lang.NoClassDefFoundError: org/web3j/codegen/SolidityFunctionWrapperGenerator at java.base/java.lang.ClassLoader.defineClass1(Native Method) at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016) at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174) at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:802) at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:700) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:623) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) at org.web3j.aion.codegen.AionGenerator$CommandLineRunner.run(AionGenerator.kt:108) at picocli.CommandLine.execute(CommandLine.java:817) at picocli.CommandLine.access$700(CommandLine.java:111) at picocli.CommandLine$RunLast.handle(CommandLine.java:994) at picocli.CommandLine$RunLast.handle(CommandLine.java:962) at picocli.CommandLine$AbstractParseResultHandler.handleParseResult(CommandLine.java:870) at picocli.CommandLine.parseWithHandlers(CommandLine.java:1153) at picocli.CommandLine.run(CommandLine.java:1490) at picocli.CommandLine.run(CommandLine.java:1424) at org.web3j.aion.codegen.AionGeneratorMain$Companion.main(AionGenerator.kt:160) at org.web3j.aion.codegen.AionGeneratorMain.main(AionGenerator.kt) Caused by: java.lang.ClassNotFoundException: org.web3j.codegen.SolidityFunctionWrapperGenerator at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ... 20 more

Looks like it can't find the .abi file but the files exist in the same folder as the executable.

Using version https://github.com/web3j/web3j-aion/releases/tag/v4.5.7

Happens on macOS Catalina and Ubuntu 18

@xaviarias @iikirilov @antonydenyer