error: expression cannot be used as a function

[Delbina]

hi, by running the command: catkin_make -j1 --pkg rtabmap_ros , i got the following error. what is the solution???

Scanning dependencies of target rtabmap_ros [ 57%] Building CXX object rtabmap_ros/CMakeFiles/rtabmap_ros.dir/src/MsgConversion.cpp.o /home/masoumeh/catkin_ws4/src/rtabmap_ros/src/MsgConversion.cpp: In function ‘bool rtabmap_ros::convertScanMsg(const LaserScan&, const string& , const string&, const ros::Time&, rtabmap::LaserScan&, tf::TransformListener&, double, bool)’: /home/masoumeh/catkin_ws4/src/rtabmap_ros/src/MsgConversion.cpp:2105:81: error: expression cannot be used as a function data = rtabmap::util3d::laserScan2dFromPointCloud(*pclScan, laserToOdom).data(); // put back in laser frame ^ /home/masoumeh/catkin_ws4/src/rtabmap_ros/src/MsgConversion.cpp:2113:81: error: expression cannot be used as a function data = rtabmap::util3d::laserScan2dFromPointCloud(*pclScan, laserToOdom).data(); // put back in laser frame ^ /home/masoumeh/catkin_ws4/src/rtabmap_ros/src/MsgConversion.cpp: In function ‘bool rtabmap_ros::convertScan3dMsg(const PointCloud2&, const str ing&, const string&, const ros::Time&, rtabmap::LaserScan&, tf::TransformListener&, double, int, float)’: /home/masoumeh/catkin_ws4/src/rtabmap_ros/src/MsgConversion.cpp:2220:121: error: no matching function for call to ‘rtabmap::LaserScan::LaserSc an(cv::Mat, int&, float&, rtabmap::Transform&)’ scan = rtabmap::LaserScan(rtabmap::util3d::laserScanFromPointCloud(*pclScan), maxPoints, maxRange, scanLocalTransform); ^ In file included from /usr/local/lib/rtabmap-0.20/../../include/rtabmap-0.20/rtabmap/core/SensorData.h:38:0, from /usr/local/lib/rtabmap-0.20/../../include/rtabmap-0.20/rtabmap/core/Signature.h:42, from /home/masoumeh/catkin_ws4/src/rtabmap_ros/include/rtabmap_ros/MsgConversion.h:47, from /home/masoumeh/catkin_ws4/src/rtabmap_ros/src/MsgConversion.cpp:28: /usr/local/lib/rtabmap-0.20/../../include/rtabmap-0.20/rtabmap/core/LaserScan.h:79:2: note: candidate: rtabmap::LaserScan::LaserScan(const cv: :Mat&, rtabmap::LaserScan::Format, float, float, float, float, float, const rtabmap::Transform&) LaserScan(const cv::Mat & data, ^ /usr/local/lib/rtabmap-0.20/../../include/rtabmap-0.20/rtabmap/core/LaserScan.h:79:2: note: candidate expects 8 arguments, 4 provided /usr/local/lib/rtabmap-0.20/../../include/rtabmap-0.20/rtabmap/core/LaserScan.h:74:2: note: candidate: rtabmap::LaserScan::LaserScan(const cv: :Mat&, int, float, rtabmap::LaserScan::Format, const rtabmap::Transform&) LaserScan(const cv::Mat & data, ^ /usr/local/lib/rtabmap-0.20/../../include/rtabmap-0.20/rtabmap/core/LaserScan.h:74:2: note: no known conversion for argument 4 from ‘rtabmap