Multiple crash for one wandering trader

into a particular position in the world, a wandering trader spawn.

I don't know why, but the trader crash instantly the server.

Some time i arrive to kill it with command block.
But if i make de /save-all to force map to be save and i disconnect and reconnect. the wandering trader reapear at the same location

I have add lava block around position to kill it + 1 command block in repeat mode to kill all wandering trader in a range of 10. without success