"wifi: ampdu: ignore deleting tx BA0" is this serious?

[zliudr]

Hi, I'm running an iot-azure sample code with device twin. Occasionally this message is printed out. It doesn't seem to affect wifi connectivity but I'd like to know what it means. Thanks.

I (45174) wifi: ampdu: ignore deleting tx BA0
I (45284) wifi: ampdu: ignore deleting tx BA0
I (46704) wifi: ampdu: ignore deleting tx BA0
I (46704) wifi: ampdu: ignore deleting tx BA0
I (46704) wifi: ampdu: ignore deleting tx BA0
I (46824) wifi: ampdu: ignore deleting tx BA0