Correct writing: use async before valid

/**Submit*/
        handleSubmit() {
            this.$refs["form"].validate(async valid => {
                if (valid) {
                    await this.handleUploadFile();
                }
                ApiUpdateOrganBrand(this.form).then(res => {
                    console.log(res);
                    this.$message.success("Brand configuration success");
                    this.handleClose();
                });
            });
        },

I started by writing async in front of handle submit, reporting the unexpected reserved word ‘await’

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