I got a nil pointer deref panic trying to use this tool: $ nilaway ./... panic: runtime error: invalid memory address or nil pointer dereference [recovered]

I got a nil pointer deref panic trying to use this tool: $ nilaway ./... panic: runtime error: invalid memory address or nil pointer dereference [recovered] panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x2 addr=0x0 pc=0x100c16a58]