iwlwifi and symbols table

[Rodary Jacques]

Hi
I just upgraded to Stretch. At boot I get a warning: " No 
symbols table" (actually it is in French: "pas de table des 
symboles"). Nevertheless everything works, except my 
access point: "modprobe iwlwifi.ko" can't find this 
module  in the kernel directory, but this module is there. 
I remember there was a problem with this module in 
Jessie, but I can't remember the solution. Please help.