Android Question [B4A] Cannot connect to database

Hello there,

Can anyone help me? i tried to use b4a to mysql with b4j jRDC and show this error

ResponseError. Reason: Failed to connect to /, Response:
ERROR: Failed to connect to /

The IP Addresses is same like at the ipconfig on CMD, and i follow all the steps and i cant connect to database
Can anyone help me? thank u so much