Can not send CKB from PW to Neuron, Yokai.

[tea2x]

• I'm submitting a ...
  [ ] bug report

• Summary
  I'm sending CKB from PW to another L1 CKB address and see this:
  
  What does this mean and how can I solve it?

• Other information
  I'm preparing for Yokai's IDO but now because of this, I can not do anything!
  I tried sending All ckb, 400ckb, 61ckb... but none succeeded.