EVM Error

Users have reported getting EVM errors mostly when performing fights before the hourly reset is done.
The enemy list refreshes every hour at UTC +0, and during the refresh the old enemy list disappears. If a fight transaction is in the middle of being calculated during this, the reference to the old enemy is lost and the transaction fails.
To avoid this, you can stop fighting before the hour is done to avoid any failed fight transactions and wait for the refresh to finish.