Retrofit: java.lang.IllegalArgumentException: No Retrofit annotation found. (parameter #1) suspend function

[SSVerma]

java.lang.IllegalArgumentException: No Retrofit annotation found. (parameter #1)
2019-06-05 17:19:11.659 11502-11502/com.ssverma.alphatest W/System.err: for method ApiEndpoints.someRequest
2019-06-05 17:19:11.659 11502-11502/com.ssverma.alphatest W/System.err: at retrofit2.Utils.methodError(Utils.java:52)
2019-06-05 17:19:11.659 11502-11502/com.ssverma.alphatest W/System.err: at retrofit2.Utils.methodError(Utils.java:42)
2019-06-05 17:19:11.659 11502-11502/com.ssverma.alphatest W/System.err: at retrofit2.Utils.parameterError(Utils.java:61)
2019-06-05 17:19:11.660 11502-11502/com.ssverma.alphatest W/System.err: at retrofit2.RequestFactory$Builder.parseParameter(RequestFactory.java:311)
2019-06-05 17:19:11.660 11502-11502/com.ssverma.alphatest W/System.err: at retrofit2.RequestFactory$Builder.build(RequestFactory.java:182)
2019-06-05 17:19:11.660 11502-11502/com.ssverma.alphatest W/System.err: at retrofit2.RequestFactory.parseAnnotations(RequestFactory.java:65)
2019-06-05 17:19:11.660 11502-11502/com.ssverma.alphatest W/System.err: at retrofit2.ServiceMethod.parseAnnotations(ServiceMethod.java:25)
2019-06-05 17:19:11.660 11502-11502/com.ssverma.alphatest W/System.err: at retrofit2.Retrofit.loadServiceMethod(Retrofit.java:168)
2019-06-05 17:19:11.660 11502-11502/com.ssverma.alphatest W/System.err: at retrofit2.Retrofit$1.invoke(Retrofit.java:147)
2019-06-05 17:19:11.660 11502-11502/com.ssverma.alphatest W/System.err: at java.lang.reflect.Proxy.invoke(Proxy.java:1006)
2019-06-05 17:19:11.660 11502-11502/com.ssverma.alphatest W/System.err: at $Proxy1.someRequest(Unknown Source)

[NikolaDespotoski]

Ensure you have removed CoroutineCallAdapterFactory() as it has been stated in the migration tip here

[luis-cortes]

@SSVerma1916 Are you sure you're using v2.6.0?

[MohamedMedhat1998]

@SSVerma1916 Are you sure you're using v2.6.0?

Thanks a lot, that was my problem. I was using v2.5.0.