java.lang.ClassNotFoundException on frida

I am trying to hook function of android messaging application.
I run frida hook script. then I get a following error:

Error: java.lang.ClassNotFoundException: Didn't find class "i0.a.a.a.e3.z" on path: DexPathList[[/data/app/xxxxx==/base.apk]]

In Jadx-Gui, base.apk is decompiled as follows

package i0.a.a.a.e3;
    /* loaded from: classes5.dex */
    public final class z {
    }

script is as follows

let z = Java.use("i0.a.a.a.e3.z");

How can I solve this error?