Article ID: 114568, created on Aug 15, 2012, last review on Jun 17, 2016

  • Applies to:
  • Operations Automation 5.4
  • Plesk 12.0 for Linux
  • Plesk 11.5 for Linux
  • Plesk 10.4 for Linux/Unix
  • Plesk 12.0 for Windows
  • Plesk 11.5 for Windows


Site cannot be published with Web Presence Builder (WPB). Publishing process hangs or finishes with the following error:

Unexpected server behavior.
Please contact the server administrator.

How to troubleshoot the issue?


Enable debug mode in WPB and Plesk backend utilities:

debug = on

~# echo "replace into misc values ('debug_util_exec', 'true')" | MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysql -u admin psa
~# touch /usr/local/psa/tmp/util_exec.log
~# chmod 777 /usr/local/psa/tmp/util_exec.log
~# /etc/init.d/sw-cp-server restart

The errors are shown in these logs:


For example, site cannot be published. The following error is shown in WPB log:

2012-08-13T23:42:40-04:00 [EMERG] [System] /sitebuilder/JsonApi/ PleskFatalException: Execution failed.
Command: sbpublish
Arguments: Array
[0] => --publish
[1] => /var/www/vhosts/DOMAIN.TLD/httpdocs
[2] => -source-file
[3] => /usr/local/psa/tmp/tmpnFrfnb
[4] => -owner
[5] => OWNER
[6] => -group
[7] => psacln
[8] => -domain-id
[9] => 29

Details: Empty error message from utility.

Since version 11.0 temporary file /usr/local/psa/tmp/tmpnFrfnb is not removed in debug mode. Execute the command manually to see the error:

~# /usr/local/psa/admin/bin/sbpublish --publish /var/www/vhosts/DOMAIN.TLD/httpdocs -source-file /usr/local/psa/tmp/tmpnFrfnb -owner OWNER -group psacln -domain-id 29
Failed to copy local temporary storage to target path. filemng: Error occurred during /bin/cp command.


sbpublish is backend utility of Plesk. In debug mode the error is written into util_exec.log:

2012-08-14-04-45-43 [AGENT][DEBUG] 10 errcode = 1; stderr = filemng: Error occurred during /bin/cp command.
; stdout = cp: cannot create regular file `/var/www/vhosts/DOMAIN.TLD/httpdocs/images/blank.gif': Permission denied
filemng: Error occurred during /bin/cp command.

14/08/2012 04:45:43 5e3efefde62048423ce558794038637c send-error-report /usr/local/psa/admin/bin/send-error-report 'warning' TRUE 0.00428

So reason of failed publishing is incorrect permissions to file /var/www/vhosts/DOMAIN.TLD/httpdocs/images/blank.gif.

Remember to disable debug mode after finish investigation.

Additional information

Cannot apply generated templates to site: "Unexpected server behavior"

Cannot launch Presence Builder: "Unexpected server behavior"

Module "Banner" cannot be added to site: "Unexpected server behavior"

Web Presence Builder: cannot publish a site: "Unexpected server behavior"

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Error: Unexpected server behavior. For details, see the product's log files. Please contact the server administrator

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Unexpected server behavior. For details, see the product's log files. Please contact the server administrator.

56797cefb1efc9130f7c48a7d1db0f0c a914db3fdc7a53ddcfd1b2db8f5a1b9c 29d1e90fd304f01e6420fbe60f66f838 0a53c5a9ca65a74d37ef5c5eaeb55d7f 01bc4c8cf5b7f01f815a7ada004154a2 5356b422f65bdad1c3e9edca5d74a1ae caea8340e2d186a540518d08602aa065 614fd0b754f34d5efe9627f2057b8642 ed7be2b984f9c27de1d2dc349dc19c6d 85a92ca67f2200d36506862eaa6ed6b8 a766cea0c28e23e978fa78ef81918ab8 2a5151f57629129e26ff206d171fbb5f e335d9adf7edffca6a8af8039031a4c7 e8756e9388aeca36710ac39e739b2b37 dd0611b6086474193d9bf78e2b293040 ac82ce33439a9c1feec4ff4f2f638899 2554725ed606193dd9bbce21365bed4e 46a8e394d6fa13134808921036a34da8 bd7fc88cf1b01f097749ae6f87272128

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