Help with "no buf for action frame" Errors

[joli]

Hello,

I have a few ESP8266 running with MicroPython v1.9.3-240-ga275cb0 on NodeMCU Board (ESP8266MOD)
I run the uhttpd server to serve some sensor data from a BME280 Sensor, and a async task to blink the onboard LED. I poll the uhttpd server every minute and after some time it stops working. On the serial console i get the messages "no buf for action frame" repeated every second or so. Otherwise the python prompt still responses. But network connections

A google search didn't reveal anything useful about this error message.
Any clues what this means, and how I can prevent it?

Thanks!

[snowden]

hello:
I meet the same problem , so ,I want to know how can deal with this problem and the reason!
If you kown some cules, please tell me !
Thank you !