设置SRID时st_buffer抛出错误

Question

mysql版本：5.7.10
我可以在lineString上设置srid为：

 SET @line = ST_GeomFromText('LINESTRING(45.076287 37.5341466,
  45.0763506 37.5339578, 45.0763677 37.5338354, 45.0764356 37.5328037,
  45.0764417 37.5325764, 45.0764387 37.5325154, 45.0764378 37.5320371,   
  45.0764671 37.5313518, 45.0764922 37.530762, 45.0764985 37.5306131, 
45.0765163 37.5304027, 45.0765576 37.5299127, 45.076546 37.5296679, 
45.0765001 37.5293058, 45.0764386 37.529033, 45.076358 37.5288548, 
45.0761693 37.5285545, 45.0758591 37.5280275, 45.0754983 37.5274145, 
45.0750665 37.5266809, 45.0750011 37.5265698, 45.07488 37.5263839, 
45.0746177 37.5260407, 45.0713792 37.5222661, 45.0712138 37.5220454, 
45.0710956 37.5218053, 45.0708632 37.5211612, 45.0706554 
37.5207316)',4326);  

但是当我尝试将我的lineString转换为多边形时，它会给我一个错误： Incorrect arguments to st_buffer
我的str_buffer：

SET @buffer=st_buffer(@line,10)

我要做的是在一条线的10米范围内找到点。