PhusionPassenger 5.1.1 install can't detect apxs2

[Сергей Е]

Linux: #1 SMP Debian 3.16.36-1+deb8u2 (2016-10-19)
Ruby: ruby 2.3.3p222 (2016-11-21 revision 56859) [x86_64-linux]
Apache: 2.4.10

/usr/bin/apxs - exists
/usr/bin/apxs2 - link to /usr/bin/apxs


install output:

--------------------------------------------

Validating installation...

 * Checking whether this Passenger install is in PATH... ✓
 * Checking whether there are no other Passenger installations... ✓
 * Checking whether Apache is installed... ✓
 * Checking whether the Passenger module is correctly configured in Apache... ✗

   Your Apache installation might be broken

   You are about to validate Phusion Passenger against the following
   Apache installation:

      apxs2: /usr/bin/apxs2

   However, this Apache installation appears to be broken, so this program
   cannot continue. To find out why this program thinks the above Apache
   installation is broken, run:

      export ORIG_PATH="$PATH"
      sudo -s -E
      export PATH="$ORIG_PATH"
      /home/ruby/.rbenv/versions/2.3.3/bin/ruby /home/ruby/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/passenger-5.1.1/bin/passenger-conf        ig --detect-apache2


Detected 1 error(s), 0 warning(s).
Please solve the above issues, then press ENTER to continue.


--------------------------------------------