dear team, i want update my ispconfig 3 from debian 8 to 9. all has worked fine, but i have one problem (on php fpm): for this both command on how to install php 7.1, 7.2, php 5.6 ln -s /usr/lib/libc-client.a /usr/lib/x86_64-linux-gnu/libc-client.a cd /usr/include ln -s x86_64-linux-gnu/curl i get this error message: ln: the symbolic link '/usr/lib/x86_64-linux-gnu/libc-client.a' could not be created: file or directory not found i dont have a /usr/lib/x86_64-linux-gnu path, so i cant build php 7.2 with imap support. but i have a /usr/lib/i386-linux-gnu folder. the same problem i hade on the installation openssl-1.0.1t.tar.gz for php 5: ... ln -s /opt/openssl/lib /opt/openssl/lib/x86_64-linux-gnu ... how i can upgrade to debian 9 with PHP71,72,56 FPM Support without any errors? can anybody help me? thank you!