Hi, so I'm trying to create an app for android to control servo motors, controlled by an Arduino. I'm using bluetooth ble XC4382 for the connection between them. But every time, I move the slider to any value, the error below keeps showing up. What does this mean? Also is the logic of my program correct [and how would I connect this to arduino] and how exactly do I find the UUID(read quite a few articles and still confused). New to programming so any help is appreciated 
There are many topics on the matter.
For example:
You can see therein that, in addition to what @Spicy_Topics has already said, your Service and Characteristics seem to be wrong. Please take a look to the link above.
Best wishes.
Your App code has to tally with your Sketch (Script) that processes the data (strings) sent to the Arduino. When using BLE, UUIDs are used to ensure that only the correct devices are sharing the data and that the data type is correctly defined.
So if you correct your App code and BLE still fails, we need to see your Sketch. We also need to know the exact model of Arduino you are using.
ProfessorCad: Tips & Tricks Bluetooth
Before your App code attempts to send data for the first time, Check that the connection was successful.
