Error Timed out waiting for a keyframe

How many people are in the conversation?
I received this error when the conversation was 7 people, since the 8th person can not participate.
Plz help me :frowning:

[erizo-64109e44-6131-258d-5b99-f9c8ecc3e409] 2018-01-24 08:59:23,945  - WARN [0x7f49067fc700] rtp.PliPacerHandler - id: 354999725878394900,  message: Timed out waiting for a keyframe
[erizo-64109e44-6131-258d-5b99-f9c8ecc3e409] 2018-01-24 08:59:23,945  - WARN [0x7f491dffb700] rtp.PliPacerHandler - id: 865065146976467700,  message: Timed out waiting for a keyframe
[erizo-64109e44-6131-258d-5b99-f9c8ecc3e409] 2018-01-24 08:59:24,380  - WARN [0x7f4948c9a700] rtp.PliPacerHandler - id: 410806842054673600,  message: Timed out waiting for a keyframe
[erizo-64109e44-6131-258d-5b99-f9c8ecc3e409] 2018-01-24 08:59:28,343  - WARN [0x7f491cff9700] rtp.PliPacerHandler - id: 858003686445524900,  message: Timed out waiting for a keyframe
[erizo-64109e44-6131-258d-5b99-f9c8ecc3e409] 2018-01-24 08:59:28,371  - WARN [0x7f491effd700] rtp.PliPacerHandler - id: 968704471706930200,  message: Timed out waiting for a keyframe

this may be a low bandwidth problem but it’s not really an error. everything’s should works ok, maybe you’ll experience some freeze of the video but should recover itself