[Solved] Why does it occur IllegalAccessError?

[Hancho1577]

this.getServer().getScheduler().scheduleRepeatingTask(this, new AsyncTask() {          // this line has the error

            @Override
            public void onRun() {
                // code...
            }

        }, 20 * 5);

It occurs "Caused by: java.lang.IllegalAccessError: tried to access class hcDiscordBot.HcDiscordBot$2 from class hcDiscordBot.HcDiscordBot"
I don't know why this error occurs....

 

[Hancho1577]

The problem was caused by improper Shade and Dependency Scope.