WSO2 API Manager Analytics doesn't works - wso2

Question

the wso2 API Manager it's working normaly but the analytics inside the wso2-am and the product wso2-am Analytics doesn't works
I execute all the steps describes in the documentation of the wso2-apim Analytics (Quick Setup and
Standard Setup) but nothing works.
when I was configuring the Enterprise Integrator the analytics has'nt work but when I configured the "synapse.properties" file the analytics started to work normaly.
it's important to know that the wso2-ei, wso2-am and wso2-am Analytics is running in the same machine.
Enterprise Integrator offset = 0
API Manager Offset = 4
API Manager Analytics - Offset = 5
the documentation of WSO2 Administration Guide "Default Ports of WSO2 Products" it is a folow description:
for API Manager:
7711 + Port offset of the APIM Analytics Server - Thrift SSL port for secure transport when publishing analytics to the API Manager Analytics server.
for Enterprise Integrator:
7712 - Thrift SSL port for secure transport, where the client is authenticated to DAS
I verifyed the log file "wso2server.log" of the wso2-am and I see the folow error:
ERROR - Error while trying to connect to the endpoint. Cannot borrow client for ssl://localhost:7712
ERROR - Thrift exception
I don't know if the fact of the wso2-am Analytics isn't work it's related to the error showing in the log of the wso2-am.
someone can help me to make the wso2-am Analytics works normaly?