Describe the Suggestion

I'm seeing a lot of server crashes and crash loops when the schematicannon tries to do things it can't - obviously stability improvements are always good too - but in the vast universe of modded MC I believe there will always be blocks that cause issues with it. To remedy this, I suggest adding a blacklist filter to the serverconfig file and writing checks against it into the schematic creation function. I think changing blacklisted blocks to air (or whatever null value the cannon accepts) would serve, though of course configurably showing a warning and preventing schematic creation or null-ing those blocks would be extra nice.

Screenshots and Videos

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Additional Context

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