Mav_Mission_Error / What is this?

Hello together,
since today, whe i start the Qgroundcontrol software, i get this error message:
Take a look in this screenshot.
Who has an idea what is this message exactly?
Thanks in advance!

Hi @rcdevil,

Do you use the QGroundControl version from our docs?

sure, exactly this version.

actually i have installed the Qgroundcontrol software 3.52 from and after connecting to my vehicle i get the message, that my firmware 3.5.5 is not the newest, i must install 3.6.8
Which firmware is recommended?
Thanks in advance!


Please use the QGC version from our docs I shared above.
Let me know if this error remains with our version.

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