Website down due to an apparent version issue with php-fpm

Please fill in any relevant information that applies to you:

• CentOS Version: AlmaLinux 9
• Centmin Mod Version Installed: i.e. 132.00stable or 140.00beta01 or 131.00stable or 140.00beta01. Run command:
  
  Code (Text):

  cminfo versions
  
  Installed:
    tcpdump-14:4.99.0-9.el9.x86_64
  
  
  1st:
  140.00beta01.b028 #Fri Jul  5 05:09:40 PM UTC 2024
  ..
  last 10:
  140.00beta01.b372 #Wed Sep  2 11:20:09 PM PDT 2026
  140.00beta01.b374 #Wed Sep  9 03:25:21 PM PDT 2026
  140.00beta01.b374 #Wed Sep  9 03:26:03 PM PDT 2026
  140.00beta01.b375 #Thu Sep 10 09:03:45 PM PDT 2026
  140.00beta01.b376 #Sun Sep 13 10:42:47 PM PDT 2026
  140.00beta01.b376 #Tue Sep 15 08:34:36 PM PDT 2026
  140.00beta01.b379 #Sun Sep 20 07:52:53 PM PDT 2026
  140.00beta01.b380 #Tue Sep 22 05:53:25 PM PDT 2026
  140.00beta01.b384 #Wed Sep 30 06:10:24 PM PDT 2026
  140.00beta01.b384 #Wed Sep 30 06:13:40 PM PDT 2026
  
  

• Nginx Version Installed: i.e. 1.27.5 or 1.29.1 ? Run command and post output in QUOTE BBCODE tags:
  
  Code (Text):

   nginx -V
  nginx version: nginx/1.31.6 (150926-203511-almalinux9-kvm-fda8859)
  built by gcc 12.2.1 20221121 (Red Hat 12.2.1-7) (GCC)
  built with OpenSSL 3.5.8 25 Aug 2026
  TLS SNI support enabled
  configure arguments: --with-ld-opt='-Wl,-E -L/usr/local/zlib-cf/lib -L/usr/local/nginx-dep/lib -ljemalloc -Wl,-z,relro,-z,now -Wl,-rpath,/usr/local/zlib-cf/lib:/usr/local/nginx-dep/lib -pie -B/opt/rh/gcc-toolset-12/root/usr/libexec/gcc/x86_64-redhat-linux/12/ld.gold -Wl,-Bsymbolic-functions -Wl,--as-needed' --with-cc-opt='-I/usr/local/zlib-cf/include -I/usr/local/nginx-dep/include -m64 -march=x86-64-v4 -mavx -mavx2 -mpclmul -msse4 -msse4.1 -msse4.2 -fPIC -g -O3 -fstack-protector-strong -B/opt/rh/gcc-toolset-12/root/usr/libexec/gcc/x86_64-redhat-linux/12/ld.gold --param=ssp-buffer-size=4 -Wformat -Wno-pointer-sign -Wimplicit-fallthrough=0 -Wno-cast-align -Wno-implicit-function-declaration -Wno-builtin-declaration-mismatch -Wno-deprecated-declarations -Wno-int-conversion -Wno-unused-result -Wno-vla-parameter -Wno-maybe-uninitialized -Wno-return-local-addr -Wno-array-parameter -Wno-alloc-size-larger-than -Wno-address -Wno-array-bounds -Wno-discarded-qualifiers -Wno-stringop-overread -Wno-stringop-truncation -Wno-missing-field-initializers -Wno-unused-variable -Wno-format -Wno-error=unused-result -Wno-missing-profile -Wno-stringop-overflow -Wno-free-nonheap-object -Wno-discarded-qualifiers -Wno-bad-function-cast -Wno-dangling-pointer -Wno-array-parameter -fcode-hoisting -Wno-cast-function-type -Wno-format-extra-args -Wp,-D_FORTIFY_SOURCE=2' --prefix=/usr/local/nginx --sbin-path=/usr/local/sbin/nginx --conf-path=/usr/local/nginx/conf/nginx.conf --build=150926-203511-almalinux9-kvm-fda8859 --with-compat --without-pcre2 --with-http_stub_status_module --with-http_secure_link_module --with-libatomic --with-http_gzip_static_module --with-http_sub_module --with-http_addition_module --with-http_image_filter_module=dynamic --with-http_geoip_module --with-stream_geoip_module --with-stream_realip_module --with-stream_ssl_preread_module --with-threads --with-stream --with-stream_ssl_module --with-http_realip_module --add-dynamic-module=../ngx-fancyindex-0.5.2 --add-module=../ngx_cache_purge-2.5.3 --add-dynamic-module=../ngx_devel_kit-0.3.2 --add-dynamic-module=../set-misc-nginx-module-0.33 --add-dynamic-module=../echo-nginx-module-0.63 --add-module=../redis2-nginx-module-0.15 --add-module=../ngx_http_redis-0.4.0-cmm --add-module=../memc-nginx-module-0.20 --add-module=../srcache-nginx-module-0.33 --add-dynamic-module=../headers-more-nginx-module-0.37 --with-pcre-jit --with-zlib=../zlib-cloudflare-1.4.0 --with-zlib-opt=-fPIC --with-http_ssl_module --with-http_v2_module
  

• PHP Version Installed: i.e. 7.3.33, 7.4.33, 8.0.30, 8.1.33, 8.2.29, 8.3.25, 8.4.11. Run command and post output in CODE/CODEB BBCODE tags:
  
  Code (Text):

  php -v
  php: error while loading shared libraries: libavif.so.15: cannot open shared object file: No such file or directory
  

• MariaDB MySQL Version Installed: i.e. 10.3.xx or 10.4.xx or 10.6.xx or 10.11.xx. Run command and post output in CODE/CODEB BBCODE tags:
  
  Code (Text):

  mysqladmin ver
  mysqladmin  Ver 10.0 Distrib 10.11.19-MariaDB, for Linux on x86_64
  Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
  
  Server version          10.11.19-MariaDB
  Protocol version        10
  Connection              Localhost via UNIX socket
  UNIX socket             /var/lib/mysql/mysql.sock
  Uptime:                 1 hour 34 min 46 sec
  
  Threads: 1  Questions: 1  Slow queries: 0  Opens: 17  Open tables: 10  Queries per second avg: 0.000
  
  

• When was last time updated Centmin Mod code base ? : current.
• Persistent Config: Do you have any persistent config file options set in /etc/centminmod/custom_config.inc ? You can check via this command:
  
  Code (Text):

  cat /etc/centminmod/custom_config.inc
  
  MARCH_TARGETNATIVE='n'        # Off for compatibility, on for speed.
  LETSENCRYPT_DETECT='y'        #
  VHOSTCTRL_CLOUDFLAREINC='y'   #
  NGINX_ZERODT='y'              # Zero downtime upgrades
  PHP_PGO='y'                   # Speed up php
  DEVTOOLSETTWELVE='y'          # GCC 12 https://community.centminmod.com/threads/22086/#post-101583
  DEVTOOLSETTHIRTEEN='n'        #
  PHP_ARGON='y'                 # Enable more secure Argon2 password hash algorithm. Recompile php after enabling.
  SET_DEFAULT_MYSQLCHARSET='utf8mb4'  # For Xenforo
  ENABLE_MARIADBTENELEVENUPGRADE='y'  # MariaDB 10.6.x to MariaDB 10.11.x upgrade
  
  POSTGRESQL='y'             # Install PostgreSQL with PHP recompile
  POSTGRESQL_BRANCHVER='16'  # Stick with current version; upgrading is manual.
  NEEDRESTART_CHECK='y'      # Check if system needs to be rebooted after system updates
  DMOTD_PHPCHECK='y'         # enable PHP latest version check on SSH logins MOTD https://community.centminmod.com/threads/19540/
  
  PHPFINFO='y'                    # PHP fileinfo extension
  PHP_OVERWRITECONF='n'           # Don't overwrite when upgrading https://community.centminmod.com/threads/19465/#post-82796
  SELFSIGNEDSSL_ECDSA='y'
  PYTHON_INSTALL_ALTERNATIVES='y' # https://community.centminmod.com/threads/23770/
  

I have multiple websites running on the same server, and one of them (the forum) went down several hours ago with a "Bad gateway Error code 502".

Chatgpt got me this info:

Code:

[20:23][root@hostname.domain.info ~]# systemctl status php-fpm --no-pager
● php-fpm.service - PHP FastCGI Process Manager
     Loaded: loaded (/usr/lib/systemd/system/php-fpm.service; enabled; preset: disabled)
    Drop-In: /etc/systemd/system/php-fpm.service.d
             └─failure-restart.conf, limit.conf
     Active: activating (auto-restart) (Result: exit-code) since Wed 2026-09-30 20:27:05 PDT; 1s ago
    Process: 12123 ExecStart=/usr/local/sbin/php-fpm --daemonize --fpm-config /usr/local/etc/php-fpm.conf --pid /run/php-fpm/php-fpm.pid (code=exited, status=127)
        CPU: 14ms

Code:

journalctl -u php-fpm --since "30 minutes ago" --no-pager

It is failing to start because a required shared library is missing:

error while loading shared libraries: libavif.so.15: cannot open shared object file: No such file or directory

let's determine why libavif.so.15 is missing and what package/version your server expects.

Please run:

ldconfig -p | grep -i avif


libavif.so.16 (libc6,x86-64) => /lib64/libavif.so.16 libavif.so (libc6,x86-64) => /lib64/libavif.so

That confirms the problem: the system has libavif.so.16, but PHP-FPM is looking specifically for libavif.so.15.

Let's do just one diagnostic step next. Please run:

ls -l /lib64/libavif.so*

lrwxrwxrwx 1 root root     13 Sep 18 13:42 /lib64/libavif.so -> libavif.so.16
lrwxrwxrwx 1 root root     17 Sep 18 13:42 /lib64/libavif.so.16 -> libavif.so.16.1.1
-rwxr-xr-x 1 root root 190040 Sep 18 13:42 /lib64/libavif.so.16.1.1

Good. That confirms there is no libavif.so.15 on the system—only version 16.

Then it seemed to fail due to the uniqueness of centminmod perhaps.

I ran the Centmin Mod menu #5 php rebuild, and that fixed the issue. But I didn't do anything that should have caused this.

After the rebuild I get:

Code:

php -v
PHP 8.2.34 (cli) (built: Sep 30 2026 21:50:41) PGO (NTS)
Copyright (c) The PHP Group
Zend Engine v4.2.34, Copyright (c) Zend Technologies
    with Zend OPcache v8.2.34, Copyright (c), by Zend Technologies

---

 

Code:

yum -q history list libavif
ID     | Command line                                                                | Date and time    | Action(s)      | Altered
----------------------------------------------------------------------------------------------------------------------------------
   421 |                                                                             | 2026-09-29 06:09 | I, U           |   15  <
   141 | -y install libavif-devel                                                    | 2025-03-14 08:19 | Install        |    4 >


yum -q history info 421
Transaction ID : 421
Begin time     : Tue 29 Sep 2026 06:09:35 AM PDT
Begin rpmdb    : 5f10bcfc206fe5913878ba80c074eabc537e0f01c4716f4d90ac92fd0d5419af
End time       : Tue 29 Sep 2026 06:09:37 AM PDT (2 seconds)
End rpmdb      : 51fbf851a993928da633603c69e3c122745a4652a08088bb4cc057c69b164603
User           : System <unset>
Return-Code    : Success
Releasever     : 9
Command Line   :
Persistence    : Unknown
Comment        :
Packages Altered:
    Install  gmock-1.11.0-1.el9.x86_64                   @epel
    Install  gtest-1.11.0-1.el9.x86_64                   @epel
    Install  gtest-devel-1.11.0-1.el9.x86_64             @epel
    Install  highway-devel-1.3.0-1.el9.x86_64            @epel
    Install  libaom-devel-3.13.1-1.el9.x86_64            @epel
    Install  libdav1d-devel-1.5.4-1.el9.x86_64           @epel
    Install  libjxl-devel-0.7.2-2.el9.x86_64             @epel
    Install  libvmaf-devel-2.3.0-2.el9.x86_64            @epel
    Install  libyuv-0-0.45.20201024git19d71f6.el9.x86_64 @epel
    Install  rav1e-devel-0.8.1-2.el9.x86_64              @epel
    Install  svt-av1-devel-2.3.0-3.el9.x86_64            @epel
    Install  svt-av1-devel-docs-2.3.0-3.el9.noarch       @epel
    Upgrade  libavif-1.1.1-3.el9.x86_64                  @epel
    Upgraded libavif-0.11.1-5.el9.x86_64                 @@System
    Upgrade  libavif-devel-1.1.1-3.el9.x86_64            @epel
    Upgraded libavif-devel-0.11.1-5.el9.x86_64           @@System
    Upgrade  svt-av1-libs-2.3.0-3.el9.x86_64             @epel
    Upgraded svt-av1-libs-0.9.0-1.el9.x86_64             @@System



yum -q history info 141
Transaction ID : 141
Begin time     : Fri 14 Mar 2025 08:19:44 AM PDT
Begin rpmdb    : 77a0b9bc607f377a456b976deefa933067cce7e627cde8f5d9b9eeadd668d5b3
End time       : Fri 14 Mar 2025 08:19:46 AM PDT (2 seconds)
End rpmdb      : 763c73b3215f45f388fbae358073164d737a7c75c2e0017c2786589ae38164f7
User           : root <root>
Return-Code    : Success
Releasever     : 9
Command Line   : -y install libavif-devel
Persistence    : Unknown
Comment        :
Packages Altered:
    Install libavif-0.11.1-5.el9.x86_64       @epel
    Install libavif-devel-0.11.1-5.el9.x86_64 @epel
    Install rav1e-libs-0.7.1-3.el9.x86_64     @epel
    Install svt-av1-libs-0.9.0-1.el9.x86_64   @epel



yum -q list libavif
Installed Packages
libavif.x86_64                                                  1.1.1-3.el9                                                  @epel