This function may only be called for date records.

#0 /var/www/html/typo3conf/ext/eol_seminars_ext/Hooks/class.tx_eolseminarsext_Hooks_Single.php(256): tx_seminars_Model_Event->getTopic()
#1 /var/www/html/typo3conf/ext/eol_seminars_ext/Hooks/class.tx_eolseminarsext_Hooks_Single.php(99): tx_eolseminarsext_Hooks_Single->getAttachedFiles(Object(ux_tx_seminars_Model_Event))
#2 /var/www/html/typo3conf/ext/seminars/pi1/class.tx_seminars_pi1.php(812): tx_eolseminarsext_Hooks_Single->modifyEventSingleView(Object(ux_tx_seminars_Model_Event), Object(tx_oelib_Template))
#3 /var/www/html/typo3conf/ext/seminars/pi1/class.tx_seminars_pi1.php(363): tx_seminars_pi1->createSingleView()
#4 [internal function]: tx_seminars_pi1->main('', Array)
#5 /var/www/html/typo3_sources/typo3_src-4.5.51-dev-elts/typo3/sysext/cms/tslib/class.tslib_content.php(6428): call_user_func_array(Array, Array)
#6 /var/www/html/typo3_sources/typo3_src-4.5.51-dev-elts/typo3/sysext/cms/tslib/content/class.tslib_content_user.php(56): tslib_cObj->callUserFunction('tx_seminars_pi1...', Array, '')
#7 /var/www/html/typo3_sources/typo3_src-4.5.51-dev-elts/typo3/sysext/cms/tslib/class.tslib_content.php(923): tslib_content_User->render(Array)
#8 /var/www/html/typo3_sources/typo3_src-4.5.51-dev-elts/typo3/sysext/cms/tslib/class.tslib_fe.php(3323): tslib_cObj->USER(Array)
#9 /var/www/html/typo3_sources/typo3_src-4.5.51-dev-elts/typo3/sysext/cms/tslib/class.tslib_fe.php(3261): tslib_fe->INTincScript_process(Array)
#10 /var/www/html/typo3_sources/typo3_src-4.5.51-dev-elts/typo3/sysext/cms/tslib/index_ts.php(498): tslib_fe->INTincScript()
#11 /var/www/html/typo3_sources/typo3_src-4.5.51-dev-elts/index.php(83): require('/var/www/html/t...')
#12 {main}