Bulk load failed

Hey @ashishgoswami Import success when I use this schema,but when used my scheme it still failed, this is my scheme content

xid:string @index(hash) @upsert .
ww/rel/invite:uid @reverse .
ww/rel/manage:uid @reverse .
ww/attr/tryFlag:int @index(int) .
ww/attr/enterFee:int @index(int) .
ww/attr/closeFlag:int @index(int) .
ww/attr/storeTime:int @index(int) .
ww/attr/createTime:int @index(int) .
ww/attr/manageLevel:int @index(int) .
ww/attr/socialLevel:int @index(int) .

Import error info

Connecting to zero at localhost:5086
2020/04/27 08:41:43 while lexing xid:string @index(hash) @upsert . 
ww/rel/invite:uid @reverse . 
ww/rel/manage:uid @reverse . 
ww/attr/tryFlag:int @index(int) . 
ww/attr/enterFee:int @index(int) . 
ww/attr/closeFlag:int @index(int) . 
ww/attr/storeTime:int @index(int) . 
ww/attr/createTime:int @index(int) . 
ww/attr/manageLevel:int @index(int) . 
ww/attr/socialLevel:int @index(int) . 
 at line 2 column 2: Invalid schema. Unexpected /
github.com/dgraph-io/dgraph/lex.(*Lexer).ValidateResult
	/ext-go/1/src/github.com/dgraph-io/dgraph/lex/lexer.go:199
github.com/dgraph-io/dgraph/schema.Parse
	/ext-go/1/src/github.com/dgraph-io/dgraph/schema/parse.go:443
github.com/dgraph-io/dgraph/dgraph/cmd/bulk.readSchema
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/bulk/loader.go:165
github.com/dgraph-io/dgraph/dgraph/cmd/bulk.newLoader
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/bulk/loader.go:119
github.com/dgraph-io/dgraph/dgraph/cmd/bulk.run
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/bulk/run.go:234
github.com/dgraph-io/dgraph/dgraph/cmd/bulk.init.0.func1
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/bulk/run.go:49
github.com/spf13/cobra.(*Command).execute
	/go/pkg/mod/github.com/spf13/cobra@v0.0.5/command.go:830
github.com/spf13/cobra.(*Command).ExecuteC
	/go/pkg/mod/github.com/spf13/cobra@v0.0.5/command.go:914
github.com/spf13/cobra.(*Command).Execute
	/go/pkg/mod/github.com/spf13/cobra@v0.0.5/command.go:864
github.com/dgraph-io/dgraph/dgraph/cmd.Execute
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/root.go:70
main.main
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/main.go:78
runtime.main
	/usr/local/go/src/runtime/proc.go:203
runtime.goexit
	/usr/local/go/src/runtime/asm_amd64.s:1373

github.com/dgraph-io/dgraph/x.Check
	/ext-go/1/src/github.com/dgraph-io/dgraph/x/error.go:42
github.com/dgraph-io/dgraph/dgraph/cmd/bulk.readSchema
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/bulk/loader.go:166
github.com/dgraph-io/dgraph/dgraph/cmd/bulk.newLoader
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/bulk/loader.go:119
github.com/dgraph-io/dgraph/dgraph/cmd/bulk.run
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/bulk/run.go:234
github.com/dgraph-io/dgraph/dgraph/cmd/bulk.init.0.func1
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/bulk/run.go:49
github.com/spf13/cobra.(*Command).execute
	/go/pkg/mod/github.com/spf13/cobra@v0.0.5/command.go:830
github.com/spf13/cobra.(*Command).ExecuteC
	/go/pkg/mod/github.com/spf13/cobra@v0.0.5/command.go:914
github.com/spf13/cobra.(*Command).Execute
	/go/pkg/mod/github.com/spf13/cobra@v0.0.5/command.go:864
github.com/dgraph-io/dgraph/dgraph/cmd.Execute
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/root.go:70
main.main
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/main.go:78
runtime.main
	/usr/local/go/src/runtime/proc.go:203
runtime.goexit
	/usr/local/go/src/runtime/asm_amd64.s:1373