BME 680 BSEC error code -34

[PicoPiedra]

I am trying to read two sensors but I got BSEC error code -34. What does it mean? Where can I find a list of code errors?

Thanks

[PicoPiedra]

I ran an I2C scan that succesfuly found both sensors at  address 0x76 and 0x77.

[PicoPiedra · Accepted solution]

It is solved. The Arduino Mega 2560 I was using had a previous state saved from one sensor. I used a new fresh board and it works now.