fail to calibrate fisheye camera

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I try to calibrate my fisheye camera using the offical tools, but only get this

how to solve this? here is my XML file

{ <opencv_storage> <Settings> <!-- Number of inner corners per a item row and column. (square, circle) --> <BoardSize_Width> 10</BoardSize_Width> <BoardSize_Height>7</BoardSize_Height> <!-- The size of a square in some user defined metric system (pixel, millimeter) --> <Square_Size>50</Square_Size> <!-- The type of input used for camera calibration. One of: CHESSBOARD CIRCLES_GRID ASYMMETRIC_CIRCLES_GRID --> <Calibrate_Pattern>"CHESSBOARD"</Calibrate_Pattern> <!-- The input to use for calibration. To use an input camera -> give the ID of the camera, like "1" To use an input video -> give the path of the input video, like "/tmp/x.avi" To use an image list -> give the path to the XML or YAML file containing the list of the images, like "/tmp/circles_list.xml" --> <Input>"1"</Input> <!-- If true (non-zero) we flip the input images around the horizontal axis. --> <Input_FlipAroundHorizontalAxis>1</Input_FlipAroundHorizontalAxis> <!-- Time delay between frames in case of camera. --> <Input_Delay>100</Input_Delay> <!-- How many frames to use, for calibration. --> <Calibrate_NrOfFrameToUse>25</Calibrate_NrOfFrameToUse> <!-- Consider only fy as a free parameter, the ratio fx/fy stays the same as in the input cameraMatrix. Use or not setting. 0 - False Non-Zero - True --> <Calibrate_FixAspectRatio> 1 </Calibrate_FixAspectRatio> <!-- If true (non-zero) tangential distortion coefficients are set to zeros and stay zero. --> <Calibrate_AssumeZeroTangentialDistortion>1</Calibrate_AssumeZeroTangentialDistortion> <!-- If true (non-zero) the principal point is not changed during the global optimization. --> <Calibrate_FixPrincipalPointAtTheCenter> 1 </Calibrate_FixPrincipalPointAtTheCenter> <!-- The name of the output log file. --> <Write_outputFileName>"out_camera_data.xml"</Write_outputFileName> <!-- If true (non-zero) we write to the output file the feature points. --> <Write_DetectedFeaturePoints>1</Write_Detected`enter code here`FeaturePoints> <!-- If true (non-zero) we write to the output file the extrinsic camera parameters. --> <Write_extrinsicParameters>1</Write_extrinsicParameters> <!-- If true (non-zero) we write to the output file the refined 3D target grid points. --> <Write_gridPoints>1</Write_gridPoints> <!-- If true (non-zero) we show after calibration the undistorted images. --> <Show_UndistortedImage>1</Show_UndistortedImage> <!-- If true (non-zero) will be used fisheye camera model. --> <Calibrate_UseFisheyeModel>1</Calibrate_UseFisheyeModel> <!-- If true (non-zero) distortion coefficient k1 will be equals to zero. --> <Fix_K1>0</Fix_K1> <!-- If true (non-zero) distortion coefficient k2 will be equals to zero. --> <Fix_K2>0</Fix_K2> <!-- If true (non-zero) distortion coefficient k3 will be equals to zero. --> <Fix_K3>0</Fix_K3> <!-- If true (non-zero) distortion coefficient k4 will be equals to zero. --> <Fix_K4>1</Fix_K4> <!-- If true (non-zero) distortion coefficient k5 will be equals to zero. --> <Fix_K5>1</Fix_K5> </Settings> </opencv_storage> }