Vue warn TypeError: Cannot read properties of undefined (reading ‘post‘)

在点击立即捐赠按钮之后就会有这两个提示，前后端都检查了一遍，还是不知道哪里有问题，麻烦大家帮我看看，谢谢

                  "8">
                    "物资图片" prop="unit">
                      "image/jpeg,image/png"
                          :on-preview="handlePreview"
                          :on-remove="handleRemove"
                          :before-remove="beforeRemove"
                          ref="upload"
                          action=""
                          :http-request="upload"
                          :auto-upload="false"
                          :before-upload="onBeforeUpload"
                          multiple
                          :limit="1"
                          :on-exceed="handleExceed"
                          v-model="addForm.pictures">
                        "small" type="primary">点击上传
                        
"tip" class="el-upload__tip">只能上传jpg/png文件，且不超过1M
                      
                    
                  
                

                
                  type="primary" @click="addIn">立即捐赠
                

 upload (file) {
      const _this = this
      let formdata = new FormData()

      // 上传图片并返回路径
      formdata.append('pictures', file.file)
      this.$axios.post('/uploadImage', formdata, {
        headers: {
          'Content-Type': 'multipart/form-data'
        }}).then((resp) => {
        if (resp.status === 200) {
          console.log(resp.data)
          // this.addForm.pictures = resp.data;
          // 设置图片回显
          _this.form.f_logo = resp.data
          _this.$message({type: 'success', message: '图片上传成功！'})
        }
      }).catch(() => {
        this.$message({type: 'info', message: '图片太大或格式有误，上传失败，请重新上传！'})
      })
    }


 final static String PIC_PATH = "pictures/";

        @PostMapping("/api/uploadImage")
        public String uploadImage(MultipartHttpServletRequest multiRequest, HttpServletRequest request){
                System.out.println("上传图片");
                SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); //生成日期格式
                String datePrefix = dateFormat.format(new Date()); //生成当前日期作为前缀
                String savePath = "src/main/resources/" + PIC_PATH; // 存储路径

                File folder = new File(savePath+datePrefix); //生成带当前日期的文件路径

                if(!folder.isDirectory()){
                        folder.mkdirs();
                }

                String randomName = Objects.requireNonNull(multiRequest.getFile("pictures")).getOriginalFilename(); //获取图片名
                //生成随机数确保唯一性，并加上图片后缀
                assert randomName != null;
                String saveName = UUID.randomUUID().toString() + randomName.substring(randomName.lastIndexOf("."),randomName.length());
                String absolutePath = folder.getAbsolutePath(); //转换成绝对路径

                try {
                        File fileToSave = new File(absolutePath + File.separator + saveName);
                        Objects.requireNonNull(multiRequest.getFile("pictures")).transferTo(fileToSave); // 图片存储到服务端
                        String returnPath = request.getScheme() + "://" + request.getServerName()+":"+request.getServerPort() + "/pictures/" + datePrefix +"/"+ saveName;

                        return returnPath;

                }catch (Exception e){
                        e.printStackTrace();
                }
                return null;
        }

 @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins("Http://localhost:8080","null")
                .allowedMethods("GET","POST","PUT","OPTIONS","DELETE")
                .allowCredentials(true)
                .allowedHeaders("*")
                .maxAge(3600);
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/pictures/**")
                .addResourceLocations("file:" + System.getProperty("user.dir")+"\\src\\main\\resources\\pictures\\");

    }
}

## 静态资源访问路径
spring.mvc.static-path-pattern=/**
## 静态资源映射路径
web.resources.static-locations=classpath:/

你这语法有问题吧，js 可以直接在页面写？