I2P support forum

We are investigating reports of errors in 2.8.1 that look like:

java.lang.ArrayIndexOutOfBoundsException: arraycopy: length -25 is negative

The frequency appears to be higher on high-traffic routers, and are quite rare on low-traffic routers.

We will provide updates when we know more.

fixed in 2.8.1-1-rc, please test, we will be releasing a 2.8.2, schedule TBD

Thanks, it was happening with me as i configured my router as floodfill.