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  1. ZABBIX BUGS AND ISSUES
  2. ZBX-26425

Problems Page returns "Null" from time to time

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    • Icon: Problem report Problem report
    • Resolution: Duplicate
    • Icon: Trivial Trivial
    • None
    • 7.2.6
    • None
    • None

      Steps to reproduce:

      1. Leave the problems page open in a tab in the background of Chrome
      2. After around 5 minutes (sometimes a few seconds before, sometimes a few seconds after) all alerts disappear and it only shows a "null" string
      3. Goes back to normal after clicking in "problems" in the menu again

      Result:
      Screenshot of null issue:

      And after clicking in "problems" again...

      Chrome DevConsole logs attached

      Server logs do not show anything, but as I suspect this is a frontend issue, I supposed this is expected

      Apache error (as it relates to the "sessions" table, I suppose is relevant)

      [Wed May 14 08:40:50.943732 2025] [php:warn] [pid 2311378:tid 2311378] [client 145.131.201.37:50420] PHP Warning:  Error in query [UPDATE sessions SET lastaccess='1747204850' WHERE sessionid='6f05368054d12d5c018687f490dbbe7d'] [Record has changed since last read in table 'sessions'] in /usr/share/zabbix/ui/include/db.inc.php on line 249, referer: https://<link to Zabbix>/zabbix.php?show=3&name=&acknowledgement_status=0&inventory%5B0%5D%5Bfield%5D=type&inventory%5B0%5D%5Bvalue%5D=&evaltype=0&tags%5B0%5D%5Btag%5D=&tags%5B0%5D%5Boperator%5D=0&tags%5B0%5D%5Bvalue%5D=&show_tags=3&tag_name_format=0&tag_priority=&show_opdata=1&show_timeline=1&filter_name=&filter_show_counter=0&filter_custom_time=0&sort=clock&sortorder=DESC&age_state=0&show_symptoms=0&show_suppressed=0&acknowledged_by_me=0&compact_view=0&details=0&highlight_row=0&action=problem.view
       

      No, I did not test with other browsers, as all my users use Chrome, needs to work there.

      Expected:

      To have my issues there, as it was before the update to 7.2.6!

      Info about my system:

      root@rc-prod-zabbix-2-vm:~# dpkg -l | grep zabbix
      ii  zabbix-agent2                    1:7.2.6-1+debian12             amd64        Zabbix network monitoring solution - agent
      ii  zabbix-apache-conf               1:7.2.6-1+debian12             all          Zabbix network monitoring solution - apache configuration for front-end
      ii  zabbix-frontend-php              1:7.2.6-1+debian12             all          Zabbix network monitoring solution - PHP front-end
      ii  zabbix-release                   1:7.2-1+debian12               all          Zabbix official repository configuration
      ii  zabbix-server-mysql              1:7.2.6-1+debian12             amd64        Zabbix network monitoring solution - server (MySQL)
      ii  zabbix-sql-scripts               1:7.2.6-1+debian12             all          Zabbix network monitoring solution - sql-scripts
      root@rc-prod-zabbix-2-vm:~# dpkg -l | grep apache
      ii  apache2                          2.4.62-1~deb12u2               amd64        Apache HTTP Server
      ii  apache2-bin                      2.4.62-1~deb12u2               amd64        Apache HTTP Server (modules and other binary files)
      ii  apache2-data                     2.4.62-1~deb12u2               all          Apache HTTP Server (common files)
      ii  apache2-utils                    2.4.62-1~deb12u2               amd64        Apache HTTP Server (utility programs for web servers)
      ii  libapache2-mod-evasive           1.10.1-5                       amd64        evasive module to minimize HTTP DoS or brute force attacks
      ii  libapache2-mod-php               2:8.2+93                       all          server-side, HTML-embedded scripting language (Apache 2 module) (default)
      ii  libapache2-mod-php8.2            8.2.28-1~deb12u1               amd64        server-side, HTML-embedded scripting language (Apache 2 module)
      ii  zabbix-apache-conf               1:7.2.6-1+debian12             all          Zabbix network monitoring solution - apache configuration for front-end
      root@rc-prod-zabbix-2-vm:~# dpkg -l | grep mariadb
      ii  libdbd-mariadb-perl              1.22-1+b1                      amd64        Perl5 database interface to the MariaDB/MySQL databases
      ii  libmariadb3:amd64                1:11.7.2+maria~deb12           amd64        MariaDB database client library
      ii  mariadb-client                   1:11.7.2+maria~deb12           amd64        MariaDB database client binaries
      ii  mariadb-client-compat            1:11.7.2+maria~deb12           all          MySQL compatibility links to mariadb-client binaries/scripts.
      ii  mariadb-client-core              1:11.7.2+maria~deb12           amd64        MariaDB database core client binaries
      ii  mariadb-common                   1:11.7.2+maria~deb12           all          MariaDB database common files (e.g. /etc/mysql/mariadb.conf.d/)
      ii  mariadb-plugin-provider-bzip2    1:11.7.2+maria~deb12           amd64        BZip2 compression support in the server and storage engines
      ii  mariadb-plugin-provider-lz4      1:11.7.2+maria~deb12           amd64        LZ4 compression support in the server and storage engines
      ii  mariadb-plugin-provider-lzma     1:11.7.2+maria~deb12           amd64        LZMA compression support in the server and storage engines
      ii  mariadb-plugin-provider-lzo      1:11.7.2+maria~deb12           amd64        LZO compression support in the server and storage engines
      ii  mariadb-plugin-provider-snappy   1:11.7.2+maria~deb12           amd64        Snappy compression support in the server and storage engines
      ii  mariadb-server                   1:11.7.2+maria~deb12           amd64        MariaDB database server binaries
      ii  mariadb-server-compat            1:11.7.2+maria~deb12           all          MySQL compatibility links to mariadb-server binaries/scripts.
      ii  mariadb-server-core              1:11.7.2+maria~deb12           amd64        MariaDB database core server files
        root@rc-prod-zabbix-2-vm:~# cat /etc/debian_version
      12.10
       

      Please let me know if you need more information.

        1. image-2025-05-14-08-59-01-298.png
          66 kB
          Tammy T
        2. image-2025-05-14-09-01-10-521.png
          105 kB
          Tammy T
        3. zabbix.har
          3.16 MB
          Tammy T

            zabbix.support Zabbix Support Team
            tammyt Tammy T
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              Created:
              Updated:
              Resolved: