Server travel fails randomly

Hello, I am working on a multiplayer project on ue4 for a year now. In our project, I make level transitions with server travel (seamless travel enabled) and I don’t have any problems so far. However, I notice that lately, I have problems with some players (especially second local player) cannot move the new map with server travel.

This is the error that I get:
Error: No Player Controller during seamless travel for LP: LocalPlayer_1.

It does not happen all my tries, it just happens randomly.
I cannot find anything related to this error. I started my project in 4.25 but need to update to 4.27 two months ago so I am suspecting this can be the cause. But I am still clueless about how to solve it.
Can anyone get this error or has any idea why I get this error?
Thanks in advance.

Hi,
I got the same issue

It does not happen all my tries, it just happens randomly.

It happen when a client is too slow to load destination map.

I haven’t found a fix for the moment, I just found that controllers (except 1st controller) are kicked out while passing from ‘transition map’ to ‘destination map’