启动时出现错误

[ WARN] [1565591961.258400740]: Illegal bounds change, was [tl: (-49.975000, -49.975000), br: (49.225001, 49.225001)], but is now [tl: (-50.000000, -50.000000), br: (49.175001, 49.175001)]. The offending layer is explore_costmap/explore_boundary

[ WARN] [1565591966.258368548]: Costmap2DROS transform timeout. Current time: 1565591966.2583, global_pose stamp: 1565591965.7456, tolerance: 0.5000

 
[ WARN] [1565591982.314095878]: Could not get robot pose, cancelling reconfiguration
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