Zamestnanci Personnel3

Exception thrown when feeding personnel3 standalone class data...
Failed to set new BE plugin workplace id, not number or smaller/equal than/to zero, '0'
exception 'Exception' with message 'Failed to set new BE plugin workplace id, not number or smaller/equal than/to zero, '0'' in /var/www/uniba.sk/typo3conf/ext/personnel3/Classes/personnel3Workplaces.php:85
Stack trace:
#0 /var/www/uniba.sk/typo3conf/ext/personnel3/pi1/class.tx_personnel3_pi1.php(435): personnel3Workplaces->setPluginBEWorkplace(0)
#1 /var/www/uniba.sk/typo3conf/ext/personnel3/pi1/class.tx_personnel3_pi1.php(194): tx_personnel3_pi1->__setPluginData()
#2 [internal function]: tx_personnel3_pi1->main('', Array)
#3 /var/www/uniba.sk/typo3/sysext/cms/tslib/class.tslib_content.php(6584): call_user_func_array(Array, Array)
#4 /var/www/uniba.sk/typo3/sysext/cms/tslib/content/class.tslib_content_user.php(55): tslib_cObj->callUserFunction('tx_personnel3_p...', Array, '')
#5 /var/www/uniba.sk/typo3/sysext/cms/tslib/class.tslib_content.php(779): tslib_content_User->render(Array)
#6 /var/www/uniba.sk/typo3/sysext/cms/tslib/class.tslib_fe.php(3307): tslib_cObj->USER(Array)
#7 /var/www/uniba.sk/typo3/sysext/cms/tslib/class.tslib_fe.php(3243): tslib_fe->INTincScript_process(Array)
#8 /var/www/uniba.sk/typo3/sysext/cms/tslib/index_ts.php(367): tslib_fe->INTincScript()
#9 /var/www/uniba.sk/index.php(77): require('/var/www/uniba....')
#10 {main}