It depends on what you want you are trying to do. When you get the 0x1000 Flash error, the chip will reset, so you lose any data you were trying to store. If this isn't an issue, then yeah you can ignore it.

I'm having the same exact issue. I'm using a button reset for deep sleep mode, and if pressed for a short second the device will get the 0x1000 flash error, but if I hold down the button it will first get the 0x1000 error but then properly wake from deep sleep mode after resetting . Hopefully this h...