异常错误

[SUP-Eric]

panic: runtime error: slice bounds out of range [-1:]

goroutine 1 [running]:
github.com/yliu7949/KouShare-dl/live.(*Live).getNewTsURLBym3u8(0xc0000e86c0)
github.com/yliu7949/KouShare-dl/live/live.go:276 +0x13e
github.com/yliu7949/KouShare-dl/live.(*Live).recordLive(0xc0000e86c0, 0x1)
github.com/yliu7949/KouShare-dl/live/live.go:251 +0xee
github.com/yliu7949/KouShare-dl/live.(*Live).WaitAndRecordTheLive(0xc0000e86c0, {0x0?, 0x0?}, 0xcb?)
github.com/yliu7949/KouShare-dl/live/live.go:143 +0xbbd
github.com/yliu7949/KouShare-dl/cmd/ks.RecordCmd.func1(0xc000004f00?, {0xc000112180?, 0x2?, 0x2?})
github.com/yliu7949/KouShare-dl/cmd/ks/commands.go:123 +0x172
github.com/spf13/cobra.(*Command).execute(0xc000004f00, {0xc000112160, 0x2, 0x2})
github.com/spf13/cobra@v1.7.0/command.go:944 +0x847
github.com/spf13/cobra.(*Command).ExecuteC(0xc000004300)
github.com/spf13/cobra@v1.7.0/command.go:1068 +0x3bd
github.com/spf13/cobra.(*Command).Execute(...)
github.com/spf13/cobra@v1.7.0/command.go:992
main.main()
./ks.go:34 +0x334