Plot crashes when doing `//count air`

MCHPRS Version: 0.4.1
2023-07-02T06:59:08.131137Z ERROR mchprs_core::server: plot panicked at 'Argument was not a Pattern', crates/core/src/plot/worldedit/mod.rs:228:18
   0: mchprs_core::server::MinecraftServer::run::{{closure}}
   1: <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call
             at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/alloc/src/boxed.rs:1987:9
      std::panicking::rust_panic_with_hook
             at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/panicking.rs:695:13
   2: std::panicking::begin_panic_handler::{{closure}}
             at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/panicking.rs:580:13
   3: std::sys_common::backtrace::__rust_end_short_backtrace
             at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/sys_common/backtrace.rs:150:18
   4: rust_begin_unwind
             at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/panicking.rs:578:5
   5: core::panicking::panic_fmt
             at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/core/src/panicking.rs:67:14
   6: mchprs_core::plot::worldedit::execute::execute_count
   7: mchprs_core::plot::worldedit::execute_command
   8: mchprs_core::plot::Plot::handle_commands
   9: mchprs_core::plot::Plot::update
  10: std::sys_common::backtrace::__rust_begin_short_backtrace
  11: core::ops::function::FnOnce::call_once{{vtable.shim}}
  12: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
             at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/alloc/src/boxed.rs:1973:9
      <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
             at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/alloc/src/boxed.rs:1973:9
      std::sys::unix::thread::Thread::new::thread_start
             at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/sys/unix/thread.rs:108:17
  13: <unknown>
  14: <unknown>
MCHPR / MCHPRS

Plot crashes when doing `//count air` #115
