Set the initial pose with rviz

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Hi everyone! I got a problem when I run the navigation stack with rviz. When setting the initial pose with rivz I got a warning :

[ WARN] [1302846487.971832409]: Failed to transform initial pose in time (You requested a transform that is 0.054 miliseconds in the past, 
but the most recent transform in the tf buffer is 21.216 miliseconds old.
 When trying to transform between /map and /base_link.)

[ INFO] [1302846487.971997932]: Setting pose (1302846487.971978): 1.194 6.348 -1.571

Here is the results of the run tf tf_monitor command:

RESULTS: for all Frames
 
Frames:
Frame: /base_link published by /we_base_odom Average Delay: 0.00026288 Max Delay: 0.000908351
Frame: /laser_link published by /base_laser_tf Average Delay: -0.024749 Max Delay: 0
Frame: /odom published by /amcl Average Delay: -0.175799 Max Delay: 0
 
All Broadcasters:
Node: /amcl 13.3557 Hz, Average Delay: -0.175799 Max Delay: 0
Node: /base_laser_tf 39.866 Hz, Average Delay: -0.024749 Max Delay: 0
Node: /we_base_odom 49.9598 Hz, Average Delay: 0.00026288 Max Delay: 0.000908351

header: 
  seq: 2
  stamp: 
    secs: 0
    nsecs: 0
  frame_id: /map
pose: 
  pose: 
    position: 
      x: 1.19398033619
      y: 6.34785318375
      z: 0.0
    orientation: 
      x: 0.0
      y: 0.0
      z: -0.707106781187
      w: 0.707106781187
  covariance: [0.25, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.25, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.06853891945200942, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
  

Here is the frame.pdf:

How can I fix this problem? Thank you !