Applicable to:
- Plesk for Linux
Symptoms
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WordPress email notifications are received by Plesk admin. A similar error can be found in
/var/log/plesk/panel.logwhen clicking on Plesk > Wordpress > example.com > Refresh.CONFIG_TEXT: Website Example (https://example.com): Failed to reset cache for the instance #902: An error has occurred when decoding JSON: Decoding failed: Syntax error
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Cloning a WordPress using WordPress Toolkit fails with the error:
CONFIG_TEXT: Failed to reset cache for the instance #902: An error has occurred when decoding JSON: Decoding failed: Syntax error
CONFIG_TEXT: Selected items were updated with errors:
* Unable to update plugin 'elementor', details: The plugin(elementor) has not been updated due to unrecognized reason -
Attempt to get theme/plugin list will print PHP code instead of JSON list of themes:
# plesk ext wp-toolkit --wp-cli -instance-id 902 -- theme list --fields=name --format=json --quiet --skip-themes=false | head
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Here is how to confirm the issue is not caused by WPTK from Plesk and by plugin/theme:
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Change current dir to website document root:
# cd /var/www/vhosts/example.com/httpdocs/
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Download official WP-CLI from Wordpress: https://wp-cli.org/#installing
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Run command on behalf of system user and using PHP version from domain use "theme list" or "plugin list" depending on what you want to check:
# sudo -u example /opt/plesk/php/7.4/bin/php ./wp-cli.phar theme list --fields=name --format=json
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If any html code output except JSON body like below returned this means you have buggy plugin/theme:
CONFIG_TEXT: [{"name":"flatsome"},{"name":"twentytwenty"}]
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Download to website document root wp-cli.phar https://wp-cli.org/#installing
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In CMD switch to website document root:
C:\> cd C:\inetpub\vhosts\example.com\httpdocs\
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Run command to get plugin/theme list:
C:\> "C:\Program Files (x86)\Plesk\Additional\PleskPHP73\php.exe" wp-cli.phar plugin list --fields=name --format=json
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If any html code output except JSON body like below returned this means you have buggy plugin/theme:
C:\> [{"name":"flatsome"},{"name":"twentytwenty"}]
Cause
Plugin or theme are not compatible with wp-cli.
Resolution
Contact the plugin or theme developers for assistance.
Comments
1 comment
How do I find out, which plugin or theme is causing the error? The last command (getting theme/plugin list) works fine on my system and returns valid JSON.
So, it seems there might be another issue for this error?
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