If it can be useful for anyone:
I also got this error: ERROR: Module reqtimeout does not exist!
I executed: sudo a2dismod reqtimeout but this did not work for me, it said: ERROR: Module reqtimeout does not exist!
The solution told in https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/576255 worked.
If it can be useful for anyone:
I also got this error:
ERROR: Module reqtimeout does not exist!
I executed:
sudo a2dismod reqtimeout
but this did not work for me, it said:
ERROR: Module reqtimeout does not exist!
The solution told in https:/ /bugs.launchpad .net/ubuntu/ +source/ apache2/ +bug/576255 worked.