Export error

Hi, I have a problem during exporting wp_statistics_visitor , the error placed bellow.

Warning: Cannot modify header information - headers already sent by (output started at /home2/mushekaf/domains/mushekaf.com/public_html/wp-content/plugins/wp-statistics/includes/optimization/export.php:1) in /home2/mushekaf/domains/mushekaf.com/public_html/wp-content/plugins/wp-statistics/includes/classes/php-export-data.class.php on line 238 Warning: Cannot modify header information - headers already sent by (output started at /home2/mushekaf/domains/mushekaf.com/public_html/wp-content/plugins/wp-statistics/includes/optimization/export.php:1) in /home2/mushekaf/domains/mushekaf.com/public_html/wp-content/plugins/wp-statistics/includes/classes/php-export-data.class.php on line 239 ID last_visit last_counter visit 1 2014-05-08T23:22:20 2014-05-08T00:00:00 34 2 2014-05-09T23:45:00 2014-05-09T00:00:00 100 3 2014-05-10T23:47:00 2014-05-10T00:00:00 103 4 2014-05-11T23:51:10 2014-05-11T00:00:00 99 5 2014-05-12T12:57:58 2014-05-12T00:00:00 22 6 2014-05-14T23:24:10 2014-05-14T00:00:00 121 7 2014-05-15T23:19:10 2014-05-15T00:00:00 53 8 2014-05-16T23:49:30 2014-05-16T00:00:00 53 9 2014-05-17T23:42:11 2014-05-17T00:00:00 145 10 2014-05-18T23:50:50 2014-05-18T00:00:00 118 11 2014-05-19T23:56:00 2014-05-19T00:00:00 130 12 2014-05-20T23:56:00 2014-05-20T00:00:00 154 13 2014-05-21T23:50:50 2014-05-21T00:00:00 108 14 2014-05-22T23:51:20 2014-05-22T00:00:00 187 15 2014-05-23T23:54:52 2014-05-23T00:00:00 115 16 2014-05-24T23:27:00 2014-05-24T00:00:00 103 17 2014-05-25T23:50:40 2014-05-25T00:00:00 119 18 2014-05-26T22:33:28 2014-05-26T00:00:00 82 19 2014-05-27T23:05:37 2014-05-27T00:00:00 38 20 2014-05-28T22:03:21 2014-05-28T00:00:00 60 21 2014-05-29T23:59:20 2014-05-29T00:00:00 105 22 2014-05-30T23:56:20 2014-05-30T00:00:00 139 23 2014-05-31T23:49:10 2014-05-31T00:00:00 166 24 2014-06-01T23:49:10 2014-06-01T00:00:00 140 25 2014-06-02T21:08:03 2014-06-02T00:00:00 39 26 2014-06-03T19:52:43 2014-06-03T00:00:00 8 27 2014-06-04T23:23:49 2014-06-04T00:00:00 10 28 2014-06-05T19:36:50 2014-06-05T00:00:00 2 29 2014-06-06T23:45:44 2014-06-06T00:00:00 26 30 2014-06-07T22:45:18 2014-06-07T00:00:00 25 31 2014-06-08T23:36:55 2014-06-08T00:00:00 60 32 2014-06-09T21:28:46 2014-06-09T00:00:00 15 33 2014-06-10T23:24:08 2014-06-10T00:00:00 30 34 2014-06-11T23:36:18 2014-06-11T00:00:00 125 35 2014-06-12T23:55:37 2014-06-12T00:00:00 30 36 2014-06-13T23:53:58 2014-06-13T00:00:00 125 37 2014-06-14T23:51:07 2014-06-14T00:00:00 99 38 2014-06-15T23:54:32 2014-06-15T00:00:00 15 39 2014-06-16T23:57:48 2014-06-16T00:00:00 20 40 2014-06-17T23:13:24 2014-06-17T00:00:00 13 41 2014-06-18T23:43:32 2014-06-18T00:00:00 25 42 2014-06-19T20:41:11 2014-06-19T00:00:00 52 43 2014-06-20T22:44:01 2014-06-20T00:00:00 14 44 2014-06-21T22:44:10 2014-06-21T00:00:00 41 45 2014-06-22T23:45:53 2014-06-22T00:00:00 6 46 2014-06-23T22:50:05 2014-06-23T00:00:00 30 47 2014-06-24T22:22:42 2014-06-24T00:00:00 16 48 2014-06-25T23:46:53 2014-06-25T00:00:00 12 49 2014-06-26T23:56:14 2014-06-26T00:00:00 16 50 2014-06-27T20:46:43 2014-06-27T00:00:00 11 51 2014-06-28T23:59:59 2014-06-28T00:00:00 56 52 2014-06-29T23:56:54 2014-06-29T00:00:00 170 53 2014-06-30T23:05:45 2014-06-30T00:00:00 65 54 2014-07-01T23:50:35 2014-07-01T00:00:00 75 55 2014-07-02T23:53:25 2014-07-02T00:00:00 59 56 2014-07-03T23:54:49 2014-07-03T00:00:00 84 57 2014-07-04T23:59:31 2014-07-04T00:00:00 92 58 2014-07-05T23:57:38 2014-07-05T00:00:00 87 59 2014-07-06T23:59:04 2014-07-06T00:00:00 162 60 2014-07-07T23:56:55 2014-07-07T00:00:00 62 61 2014-07-08T23:26:17 2014-07-08T00:00:00 94 62 2014-07-09T23:03:56 2014-07-09T00:00:00 19 63 2014-07-10T22:54:16 2014-07-10T00:00:00 20 64 2014-07-11T23:44:39 2014-07-11T00:00:00 35 65 2014-07-12T23:45:38 2014-07-12T00:00:00 131 66 2014-07-13T23:54:01 2014-07-13T00:00:00 337 67 2014-07-14T23:53:45 2014-07-14T00:00:00 366 68 2014-07-15T23:50:44 2014-07-15T00:00:00 553 69 2014-07-16T23:57:33 2014-07-16T00:00:00 179 70 2014-07-17T23:55:40 2014-07-17T00:00:00 169 71 2014-07-18T23:58:07 2014-07-18T00:00:00 147 72 2014-07-19T23:44:45 2014-07-19T00:00:00 145 73 2014-07-20T23:43:53 2014-07-20T00:00:00 75 74 2014-07-21T23:59:44 2014-07-21T00:00:00 134 75 2014-07-22T23:57:50 2014-07-22T00:00:00 185 76 2014-07-23T23:54:40 2014-07-23T00:00:00 95 77 2014-07-24T23:57:10 2014-07-24T00:00:00 155 78 2014-07-25T23:02:49 2014-07-25T00:00:00 34 79 2014-07-26T19:50:26 2014-07-26T00:00:00 99 80 2014-07-27T23:31:47 2014-07-27T00:00:00 38 81 2014-07-28T23:15:14 2014-07-28T00:00:00 92 82 2014-07-29T22:47:30 2014-07-29T00:00:00 70 83 2014-07-30T20:56:38 2014-07-30T00:00:00 25 84 2014-07-31T19:30:50 2014-07-31T00:00:00 13 85 2014-08-01T23:45:32 2014-08-01T00:00:00 19 86 2014-08-02T23:50:10 2014-08-02T00:00:00 35 87 2014-08-03T23:11:15 2014-08-03T00:00:00 30 88 2014-08-04T23:20:38 2014-08-04T00:00:00 35 89 2014-08-05T23:54:56 2014-08-05T00:00:00 22 90 2014-08-06T23:59:09 2014-08-06T00:00:00 264 91 2014-08-07T23:07:03 2014-08-07T00:00:00 103 92 2014-08-08T22:12:59 2014-08-08T00:00:00 40 93 2014-08-09T23:56:23 2014-08-09T00:00:00 34 94 2014-08-10T23:43:39 2014-08-10T00:00:00 267 95 2014-08-11T23:38:24 2014-08-11T00:00:00 64 96 2014-08-12T23:29:43 2014-08-12T00:00:00 30 97 2014-08-13T20:35:21 2014-08-13T00:00:00 33 98 2014-08-14T23:53:49 2014-08-14T00:00:00 26 99 2014-08-15T23:15:19 2014-08-15T00:00:00 35 100 2014-08-16T23:44:37 2014-08-16T00:00:00 82 101 2014-08-17T23:31:34 2014-08-17T00:00:00 41 102 2014-08-18T23:20:45 2014-08-18T00:00:00 41 103 2014-08-19T23:27:38 2014-08-19T00:00:00 31 104 2014-08-20T22:32:26 2014-08-20T00:00:00 43 105 2014-08-21T23:17:08 2014-08-21T00:00:00 33 106 2014-08-22T23:31:16 2014-08-22T00:00:00 40 107 2014-08-23T23:31:46 2014-08-23T00:00:00 49 108 2014-08-24T22:45:20 2014-08-24T00:00:00 29 109 2014-08-25T23:11:25 2014-08-25T00:00:00 20 110 2014-08-26T21:49:47 2014-08-26T00:00:00 31 111 2014-08-27T23:54:25 2014-08-27T00:00:00 100 112 2014-08-28T23:38:13 2014-08-28T00:00:00 45 113 2014-08-29T23:20:16 2014-08-29T00:00:00 27 114 2014-08-30T23:57:32 2014-08-30T00:00:00 35 115 2014-08-31T23:19:42 2014-08-31T00:00:00 27 116 2014-09-01T23:47:59 2014-09-01T00:00:00 42 117 2014-09-02T23:22:17 2014-09-02T00:00:00 26 118 2014-09-03T22:13:44 2014-09-03T00:00:00 33 119 2014-09-04T23:42:19 2014-09-04T00:00:00 37 120 2014-09-05T23:17:23 2014-09-05T00:00:00 54 121 2014-09-06T09:39:13 2014-09-06T00:00:00 13 122 2014-09-07T23:57:43 2014-09-07T00:00:00 96 123 2014-09-08T23:46:46 2014-09-08T00:00:00 65 124 2014-09-09T23:56:34 2014-09-09T00:00:00 85 125 2014-09-10T23:27:12 2014-09-10T00:00:00 105 126 2014-09-11T23:58:22 2014-09-11T00:00:00 73 127 2014-09-12T23:36:13 2014-09-12T00:00:00 84 128 2014-09-13T23:57:15 2014-09-13T00:00:00 76 129 2014-09-14T23:52:38 2014-09-14T00:00:00 88 130 2014-09-15T23:59:25 2014-09-15T00:00:00 106 131 2014-09-16T23:59:49 2014-09-16T00:00:00 81 132 2014-09-17T23:46:42 2014-09-17T00:00:00 194 133 2014-09-18T23:59:34 2014-09-18T00:00:00 119 134 2014-09-19T23:40:27 2014-09-19T00:00:00 39 135 2014-09-20T23:43:48 2014-09-20T00:00:00 52 136 2014-09-21T23:17:13 2014-09-21T00:00:00 269 137 2014-09-22T22:47:42 2014-09-22T00:00:00 21 138 2014-09-23T23:22:24 2014-09-23T00:00:00 18 139 2014-09-24T21:32:12 2014-09-24T00:00:00 19 140 2014-09-25T23:34:41 2014-09-25T00:00:00 29 141 2014-09-26T23:30:48 2014-09-26T00:00:00 43 142 2014-09-27T23:54:53 2014-09-27T00:00:00 27 143 2014-09-28T23:35:11 2014-09-28T00:00:00 46 144 2014-09-29T23:34:33 2014-09-29T00:00:00 36 145 2014-09-30T22:18:07 2014-09-30T00:00:00 26 146 2014-10-01T23:29:13 2014-10-01T00:00:00 31 147 2014-10-02T23:39:39 2014-10-02T00:00:00 27 148 2014-10-03T23:18:28 2014-10-03T00:00:00 19 149 2014-10-04T23:01:56 2014-10-04T00:00:00 17 150 2014-10-05T23:51:09 2014-10-05T00:00:00 33 151 2014-10-06T23:58:08 2014-10-06T00:00:00 126 152 2014-10-07T23:59:43 2014-10-07T00:00:00 89 153 2014-10-08T23:29:09 2014-10-08T00:00:00 113 154 2014-10-09T23:45:24 2014-10-09T00:00:00 35 155 2014-10-10T23:59:57 2014-10-10T00:00:00 134 156 2014-10-11T23:52:29 2014-10-11T00:00:00 120 157 2014-10-12T23:48:12 2014-10-12T00:00:00 104 158 2014-10-13T23:48:31 2014-10-13T00:00:00 63 159 2014-10-14T23:54:04 2014-10-14T00:00:00 59 160 2014-10-15T23:51:25 2014-10-15T00:00:00 111 161 2014-10-16T23:59:32 2014-10-16T00:00:00 112 162 2014-10-17T23:48:46 2014-10-17T00:00:00 87 163 2014-10-18T23:55:05 2014-10-18T00:00:00 98 164 2014-10-19T23:36:17 2014-10-19T00:00:00 51 165 2014-10-20T23:51:19 2014-10-20T00:00:00 72 166 2014-10-21T22:27:34 2014-10-21T00:00:00 118 167 2014-10-22T23:57:25 2014-10-22T00:00:00 54 168 2014-10-23T23:45:03 2014-10-23T00:00:00 117 169 2014-10-24T21:19:31 2014-10-24T00:00:00 80 170 2014-10-25T23:57:55 2014-10-25T00:00:00 47 171 2014-10-26T23:47:07 2014-10-26T00:00:00 107 172 2014-10-27T23:58:54 2014-10-27T00:00:00 51 173 2014-10-28T23:58:13 2014-10-28T00:00:00 80 174 2014-10-29T23:53:30 2014-10-29T00:00:00 114 175 2014-10-30T23:59:32 2014-10-30T00:00:00 116 176 2014-10-31T23:49:10 2014-10-31T00:00:00 94 177 2014-11-01T23:58:45 2014-11-01T00:00:00 135 178 2014-11-02T23:58:50 2014-11-02T00:00:00 171 179 2014-11-03T23:10:17 2014-11-03T00:00:00 130 180 2014-11-04T23:46:30 2014-11-04T00:00:00 58 181 2014-11-05T23:27:51 2014-11-05T00:00:00 69 182 2014-11-06T23:46:26 2014-11-06T00:00:00 71 183 2014-11-07T23:56:56 2014-11-07T00:00:00 105 184 2014-11-08T23:47:21 2014-11-08T00:00:00 107 185 2014-11-09T23:23:19 2014-11-09T00:00:00 62 186 2014-11-10T23:47:21 2014-11-10T00:00:00 57 187 2014-11-11T23:43:24 2014-11-11T00:00:00 100 188 2014-11-12T23:55:37 2014-11-12T00:00:00 84 189 2014-11-13T23:54:11 2014-11-13T00:00:00 92 190 2014-11-14T23:52:11 2014-11-14T00:00:00 40 191 2014-11-15T23:58:24 2014-11-15T00:00:00 41 192 2014-11-16T23:42:02 2014-11-16T00:00:00 88 193 2014-11-17T23:58:41 2014-11-17T00:00:00 93 194 2014-11-18T23:48:30 2014-11-18T00:00:00 84 195 2014-11-19T23:50:56 2014-11-19T00:00:00 72 196 2014-11-20T22:57:03 2014-11-20T00:00:00 108 197 2014-11-21T23:59:08 2014-11-21T00:00:00 112 198 2014-11-22T23:59:31 2014-11-22T00:00:00 160 199 2014-11-23T23:47:33 2014-11-23T00:00:00 76 200 2014-11-24T22:05:26 2014-11-24T00:00:00 72 201 2014-11-25T23:21:23 2014-11-25T00:00:00 70 202 2014-11-26T23:51:02 2014-11-26T00:00:00 80 203 2014-11-27T23:53:02 2014-11-27T00:00:00 67 204 2014-11-28T23:13:14 2014-11-28T00:00:00 89 205 2014-11-29T23:48:24 2014-11-29T00:00:00 50 206 2014-11-30T23:46:38 2014-11-30T00:00:00 77 207 2014-12-01T23:59:00 2014-12-01T00:00:00 72 208 2014-12-02T23:57:42 2014-12-02T00:00:00 215 209 2014-12-03T23:48:03 2014-12-03T00:00:00 45 210 2014-12-04T23:59:26 2014-12-04T00:00:00 41 211 2014-12-05T22:41:56 2014-12-05T00:00:00 50 212 2014-12-06T23:36:29 2014-12-06T00:00:00 61 213 2014-12-07T23:21:27 2014-12-07T00:00:00 52 214 2014-12-08T23:45:33 2014-12-08T00:00:00 1736 215 2014-12-09T23:19:06 2014-12-09T00:00:00 44 216 2014-12-10T21:54:38 2014-12-10T00:00:00 79 217 2014-12-11T23:48:44 2014-12-11T00:00:00 67 218 2014-12-12T23:53:15 2014-12-12T00:00:00 76 219 2014-12-13T23:33:36 2014-12-13T00:00:00 55 220 2014-12-14T23:17:33 2014-12-14T00:00:00 36 221 2014-12-15T23:29:35 2014-12-15T00:00:00 51 222 2014-12-16T22:10:20 2014-12-16T00:00:00 37 223 2014-12-17T23:51:51 2014-12-17T00:00:00 18 224 2014-12-18T23:23:29 2014-12-18T00:00:00 44 225 2014-12-19T23:36:32 2014-12-19T00:00:00 74 226 2014-12-20T20:51:31 2014-12-20T00:00:00 55 227 2014-12-21T23:52:51 2014-12-21T00:00:00 37 228 2014-12-22T23:58:46 2014-12-22T00:00:00 94 229 2014-12-23T23:49:00 2014-12-23T00:00:00 409 230 2014-12-24T23:48:32 2014-12-24T00:00:00 325 231 2014-12-25T23:46:08 2014-12-25T00:00:00 540 232 2014-12-26T23:58:36 2014-12-26T00:00:00 100 233 2014-12-27T23:55:28 2014-12-27T00:00:00 54 234 2014-12-28T23:50:58 2014-12-28T00:00:00 80 235 2014-12-29T23:46:14 2014-12-29T00:00:00 47 236 2014-12-30T23:58:01 2014-12-30T00:00:00 103 237 2014-12-31T23:35:20 2014-12-31T00:00:00 112 238 2015-01-01T23:49:19 2015-01-01T00:00:00 446 239 2015-01-02T23:55:44 2015-01-02T00:00:00 85 240 2015-01-03T11:23:49 2015-01-03T00:00:00 35 241 2015-01-05T22:35:32 2015-01-05T00:00:00 14 242 2015-01-06T23:54:42 2015-01-06T00:00:00 29 243 2015-01-07T23:32:57 2015-01-07T00:00:00 84 244 2015-01-08T23:59:55 2015-01-08T00:00:00 85 245 2015-01-09T23:53:38 2015-01-09T00:00:00 118 246 2015-01-10T23:55:47 2015-01-10T00:00:00 108 247 2015-01-11T23:58:58 2015-01-11T00:00:00 251 248 2015-01-12T23:49:32 2015-01-12T00:00:00 337 249 2015-01-13T23:55:37 2015-01-13T00:00:00 221 250 2015-01-14T23:59:40 2015-01-14T00:00:00 177 251 2015-01-15T22:09:03 2015-01-15T00:00:00 65 252 2015-01-16T23:34:47 2015-01-16T00:00:00 72 253 2015-01-17T23:45:36 2015-01-17T00:00:00 116 254 2015-01-18T23:46:08 2015-01-18T00:00:00 97 255 2015-01-19T23:52:35 2015-01-19T00:00:00 172 256 2015-01-20T22:58:10 2015-01-20T00:00:00 199 257 2015-01-21T23:52:40 2015-01-21T00:00:00 198 258 2015-01-22T23:47:43 2015-01-22T00:00:00 167 259 2015-01-23T23:57:10 2015-01-23T00:00:00 153 260 2015-01-24T23:34:36 2015-01-24T00:00:00 149 261 2015-01-25T23:13:27 2015-01-25T00:00:00 171 262 2015-01-26T23:58:42 2015-01-26T00:00:00 131 263 2015-01-27T23:54:23 2015-01-27T00:00:00 69 264 2015-01-28T23:52:57 2015-01-28T00:00:00 470 265 2015-01-29T23:27:42 2015-01-29T00:00:00 93 266 2015-01-30T23:58:28 2015-01-30T00:00:00 131 267 2015-01-31T23:45:47 2015-01-31T00:00:00 213 268 2015-02-01T23:56:11 2015-02-01T00:00:00 172 269 2015-02-02T12:42:40 2015-02-02T00:00:00 55

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