I encountered a syntax error while trying to use the /fill command in Minecraft Bedrock Edition. The command I used was "/fill x1 y1 z1 x2 y2 z2 air replace structure_void" with the intention of replacing all structure_void blocks within the specified coordinates with air blocks. However, the game returned a syntax error message with the word "replace" highlighted, indicating that there was an issue with the syntax of the command. I tried multiple variations of the command, including "/fill x1 y1 z1 x2 y2 z2 air 0 replace structure_void" and "/fill x1 y1 z1 x2 y2 z2 air destroy structure_void", but each one returned the same error message. I believe this to be a bug within the game and would like to report it to the Minecraft team.