I m getting following error when using debugger,

Device nrf52840:

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C:\SysGCC\arm-eabi\bin\arm-eabi-gdb.exe –interpreter mi C:\Users\k.pareek\Documents\visualstudio2017\Projects\EmbeddedProject1\EmbeddedProject1/Debug/EmbeddedProject1.elf
-gdb-version
=thread-group-added,id=”i1″
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Reading symbols from C:\Users\k.pareek\Documents\visualstudio2017\Projects\EmbeddedProject1\EmbeddedProject1/Debug/EmbeddedProject1.elf…
Warning: could not set a breakpoint on main. ‘Step into new instance’ will not work.
vj+z1: GDB session exited prematurely. Please verify that the project is built, the selected GDB binary exists and the working directory is specified correctly.
at vj.b2()
at VisualGDB.GDBDebugEngine.d1(rw b, a a)