PS D:\wa_0.6.0_windows_amd64> .\wa.exe run ./demo.wa
panic: runtime error: index out of range [0] with length 0

goroutine 1 [running]:
        /home/runner/work/wa/wa/internal/loader/loader.go:196 +0x1052
wa-lang.org/wa/internal/loader.(*_Loader).loadProgram(0xc000250180, 0xc000295a10, 0xc00017c900)
        /home/runner/work/wa/wa/internal/loader/loader.go:119 +0x446
wa-lang.org/wa/internal/loader.(*_Loader).LoadProgram(0xc000250180, {0xc0000aa090, 0x9})
        /home/runner/work/wa/wa/internal/loader/loader.go:65 +0x18c
wa-lang.org/wa/internal/loader.LoadProgram(0xc000144dc0, {0xc0000aa090, 0x9})
        /home/runner/work/wa/wa/internal/loader/api.go:52 +0x12e
wa-lang.org/wa/internal/app.(*App).WASM(0xc000114f00, {0xc0000aa090, 0x5})
        /home/runner/work/wa/wa/internal/app/app_wasm_.go:14 +0x4c
wa-lang.org/wa/internal/app/wacli.cliRun(0xc00010bc40)
        /home/runner/work/wa/wa/internal/app/wacli/wacli.go:542 +0x29a
wa-lang.org/wa/internal/app/wacli.Main.func6(0xc00011d7a0)
        /home/runner/work/wa/wa/internal/app/wacli/wacli.go:151 +0x19
wa-lang.org/wa/internal/3rdparty/cli.(*Command).Run(0xc00011d7a0, 0xc00010bac0)
        /home/runner/work/wa/wa/internal/3rdparty/cli/command.go:163 +0x64a
wa-lang.org/wa/internal/3rdparty/cli.(*App).RunContext(0xc000125380, {0xaa0018, 0xc0000aa0a0}, {0xc0000d4000, 0x3, 0x4})
        /home/runner/work/wa/wa/internal/3rdparty/cli/app.go:313 +0x81e
wa-lang.org/wa/internal/3rdparty/cli.(*App).Run(...)
        /home/runner/work/wa/wa/internal/3rdparty/cli/app.go:224
wa-lang.org/wa/internal/app/wacli.Main()
        /home/runner/work/wa/wa/internal/app/wacli/wacli.go:476 +0x18be
main.main()
        /home/runner/work/wa/wa/main.go:8 +0x17