Cannot access target, shutting down debug session

Hi Im Bagus,
I have trouble with debug session, i can't debug with simple blink code,
Before im using simple blink code , i try dht11 with i2c lcd program but it was same with error "Cannot access target, shutting down debug session". I found solution in this kecil forum thread, but it still cannot help my trouble. Please help me, this Is gonna save my life.

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