update

server/api/v1/course/course_signup.go

@@ -191,7 +191,7 @@ func (courseSignupApi *CourseSignupApi) SignCourse(c *gin.Context) {
 	}
 	if !address.IsEthAddress(courseSignup.Addr) {
 		global.GVA_LOG.Error("地址格式错误！", zap.Error(err),zap.String("addr",courseSignup.Addr))
-		response.FailWithMessage(err.Error(), c)
+		response.FailWithMessage("invalid address", c)
 		return
 	}
 	user,err := courseUsersService.GetCourseUsersByAddr(courseSignup.Addr)