Harvest my Autoflower grandaddy purple - brown/dead area near buds?

I’m noticing some brown spots near my buds – should I be concerned, or is this a sign that I’m nearing my harvest.

I started my grow indoor (no tent) with a simple grow light, then transferred them outdoors at week 5, flowering began in week 9, and I’m currently in week 13. – I’m in the northeast and growing them in a raised bed. I purchased the ILGM fertilizing system and using it according to directions. The brown areas started to materialize in just a few buds about a week ago.

Should I be concerned?

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Sadly I believe that is bud rot

Looks like bud rot.