please transfer a valid prop path to form item!

原因是  <el-form-item> 中的 prop 有问题：

 <el-form-item prop="FormData.vCode" :rvules="{
              required: true, message: '请输入验证码', trigger: 'blur'
            }">
              <el-col :xs="15" :sm="15" :span="17">
                <el-input prefix-icon="el-icon-more-outline" maxlength="6" placeholder="短信验证码" 
                  v-model="FormData.vCode"></el-input>
              </el-col>
            </el-form-item>
            <el-form-item prop="contactemail" :rules="{
              required: true, message: '请输入联系人邮箱', trigger: 'blur'
            }">

只需要把 prop="FormData.vCode" 改为 prop="vCode"就解决了