LACP suspended between N7K and N2K

Hi
we have a creation trouble between N7K and N2K on port-channel, the port-channel is suspended because LACP receive PDUs

With FEX you use don't use the mode active. 
Interface eth5/33
  switchport mode fex-fabric
  channel-group 70
The FEX uses a "Fabric" header on the link, and doesn't require LACP.  You can use LACP on any host ports on the FEX, just not on the fabric links.

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