Applicable to:
- Plesk Obsidian for Linux
Symptoms
-
Unable to install/remove the plugin/theme in Plesk > example.com > WordPress, the process fails with the error below:
CONFIG_TEXT: An error has occurred when decoding JSON by Zend_Json: Illegal Token
Failed to reset cache for the instance #74, reason: An error has occurred when decoding
JSON: Illegal Token - The same error can be sent to the administrator of the WordPress instance.
-
There is a Byte-Order Mark (BOM) character in one of the WordPress files with
.php
extension.
Cause
Product issue:
-
#EXTWPTOOLK-4736 "Update of certain plugins & themes will not mark WordPress sites as broken if there were JSON decoding errors."
Fixed in:- WordPress Toolkit 4.8.4 29 June 2020
Resolution
Workaround
If an update is not possible for some reason, apply the workaround below:
-
Log into the serer via SSH.
- Execute the command below to find
.php
files with the BOM character:
# grep -rlI $'\xEF\xBB\xBF' /var/www/vhosts/example.com/httpdocs | grep -i .php$
/var/www/vhosts/example.com/httpdocs/wp-content/plugins/vc-google-maps/vc_extend.php -
Create a backup of the found file from the step №2:
# cp -a /var/www/vhosts/example.com/httpdocs/wp-content/plugins/vc-google-maps/vc_extend.php{,.bkp}
-
Run the command below to remove BOM character from the affected WordPress file:
# sed -i '1 s/^\xef\xbb\xbf//' var/www/vhosts/example.com/httpdocs/wp-content/plugins/vc-google-maps/vc_extend.php
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