Technical Questions
Help articles related to Plesk migration, upgrades, databases ant etc.
Plesk Service/Interface
- MySQL fails to start when a Plesk server lacks disk space: SQLSTATE[HY000] No space left on device 500 Plesk\Exception\Database
- ASP.NET or other components installed not via Plesk are not detected at Server Components menu
- Plesk can not be updated or is not accessible: Class Laminas\ServiceManager\ServiceLocatorInterface cannot implement previously implemented interface
- Unable to click the checkbox in the settings screen on Plesk: the Hand pointer cursor does not appear
- Tasks in Plesk are never executed and stuck as new: Cannot fetch process properties
- Plesk Repair tool fails to fix File System error: bytes-like object is required, not 'str'
Other
- How to access a website which exists in Plesk, but is not resolved to it from the Internet
- How to diagnose a DoS/DDoS attack and find websites under attack on a Plesk server
- How to manage local firewall rules using Plesk Firewall in Plesk for Linux
- How to monitor usage of system resources in a period of time using atop?
- Rest API vulnerability against the CSRF attack in Plesk
- Is Plesk affected by CVE-2022-42889 vulnerability in Apache Commons Text library?
Webserver
- A website or webmail hosted in Plesk periodically shows the Plesk/web server default page or old website content
- Websites on PHP-FPM are unavailable or loading slowly: "server reached max_children setting" OR "pool seems busy"
- AWStats is not calculated on a Plesk server with CentOS 7 and enabled SELinux
- PHP scripts fails with the following error: Unable to load dynamic library sodium.so : cannot open shared object file: No such file or directory
- Apache can not be started on a Plesk server: ModSecurity: Problems loading external resources
- Error in Plesk: /usr/sbin/nginx: error while loading shared libraries: libssl.so.1.1: cannot open shared object file: No such file or directory.
Applications & Extensions
- Unable to open Git extension in Plesk: A table must have a primary key, but none was found for table 'DeployKeys'
- Cannot log into Plesk: Composer detected issues in your platform: Your Composer dependencies require a PHP version ">= 7.4.0".
- Plesk Git extension does not pull from GitHub: Method name must be a string
- Error installing Grafana on Plesk: Not using downloaded plesk-ext-grafana/repomd.xml because it is older than what we have
- After updating to Plesk Obsidian 18.0.47 on Linux, blank page is shown instead of WordPress Toolkit menu
- Unable to install certificate in Plesk: Passed 'exception' value must be an \Throwable object
Backup, Restore & Migration
- Backup can not be created in Plesk: "Document is empty, line 1, column 1 (, line 1)" or "None (line 0)"
- Unable to create a backup in Plesk: Failed to exec backup_restore_helper: Exit code: 3: System user unavailable
- Scheduled backups fails since update to Plesk Obsidian 18.0.47: expected str, bytes or os.PathLike object, not int
- Backups fail after the update to Plesk Obsidian 18.0.47: The backup process failed: can't concat str to bytes
- Migration from Plesk servers with MySQL<5.5 fails: Character set 'utf8mb4' is not a compiled character set
- Unable to start migration on Plesk server: Command execution failed on the local server with non-zero exit code.
Databases
- How to upgrade MySQL 5.5 to 5.6/5.7 or MariaDB 5.5 to 10.x on Linux?
- How to fix InnoDB corruption cases for the MySQL databases on Plesk for Linux?
- Are there any alternatives to myLittleAdmin in Plesk for Windows?
- MariaDB cannot start on Plesk server: redo log file exists
- Unable to start MariaDB 10.6 on a Plesk server: Bind on TCP/IP port. Got error: 22: Invalid argument
- Plesk or system update fails on Linux: http://yum.mariadb.org/10.1/centos7-amd64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
Installation & Upgrade
- Plesk update/upgrade fails: The installation of the package 'iiscompression' failed with code 1603
- plesk repair fs fails: ERROR:Cannot find deb-archive for package plesk-backup-utilities
- Menus in Plesk do not load: Unable to exec utility listmng: file does not exist or is not executable: /opt/psa/admin/bin/listmng
- Plesk update fails: ackage plesk-awstats-configurator-18.0-2.redhat.8+p18.0.46.0+t220804.0733.noarch requires awstats >= 7.8, but none of the providers can be installed
- Unable to update Plesk from 18.0.45 to 18.0.46: Exception: Failed to solve dependencies: plesk-awstats-configurator-18.0-2.centos.7+p18.0.46.0+t220808.0959.noarch requires awstats >= 7.8
- Unable to update Plesk on Debian/Ubuntu: ERROR: The repository does not have a release file
- How to troubleshoot autodiscover functionality in a Plesk server?
- Why is Roundcube 1.5.0/1.6.0 not available in Plesk for CentOS 7 and Ubuntu 18.04?
- Outlook cannot connect via TLS to a Plesk server after Windows update (KB5018410)
- Unable to start Postfix in Plesk: /usr/sbin/postconf: libmysqlclient.so.18: cannot open shared object file: No such file or directory
- Incoming mail to Plesk server is rejected by Spamhaus BL: Error: open resolver
- Swiftmailer/Symfonymailer or Prestashop messages stopped working after upgrading Plesk to version 18.0.45
DNS & Statistics
- Unable to start named/bind DNS in Plesk: unknown option 'version'
- Domain is not accessible from some locations after switching to Plesk nameservers due to DNSSEC misconfiguration
- Transfer DNS button is missing in Plesk
- Is it possible to manage DNSSEC via command-line interface in Plesk?
- Unable to start BIND on Plesk server: Failed with result 'timeout'
- Domains hosted on Plesk server cannot be accessed: DNSPROBE FINISHED ERROR
Website Builder
- How to disable Google Fonts on a website hosted with Web Presence Builder?
- Unable to publish website in Web Presence Builder: Unable to Connect to ssl://feedback.pp.parallels.com:443: Name or service not known
- Migration from WPB 12.0 to WPB 17.8.12
- How to enable Web Presence Builder in Plesk for all websites?
- Error while accessing Plesk Web Presence Builder: Base table or view not found
- Unable to backup/restore a snapshot for Web Presence Builder in Plesk for Windows: Invalid Snapshot