Hardware interface issues can frequently trigger this error.
If the error occurs during the burning process, try this community-recommended "unplug" trick: Open PhoenixCard and select your and Image . Click Burn and wait for the error to appear. phoenixcard load cardtool failed
For those with PhoenixCard "Error" during Burn - PINE64 Forum Hardware interface issues can frequently trigger this error
A: Rarely works. PhoenixCard’s low-level disk access fails under Wine. Use a Windows virtual machine or dual boot. phoenixcard load cardtool failed