Update uninstall.php

Co-authored-by: Copilot <[email protected]>

Author: alxndr-w

uninstall.php

@@ -9,9 +9,11 @@
 $sql->setQuery('DELETE FROM `' . rex::getTable('yform_table') . '` WHERE table_name = "' . rex::getTable('ycom_user') . '"');
 $sql->setQuery('DELETE FROM `' . rex::getTable('yform_field') . '` WHERE table_name = "' . rex::getTable('ycom_user') . '"');
 $sql->setQuery('DELETE FROM `' . rex::getTable('yform_history') . '` WHERE table_name = "' . rex::getTable('ycom_user') . '"');
-$sql->setQuery('DELETE FROM `' . rex::getTable('yform_table') . '` WHERE table_name = "' . rex::getTable('ycom_user_token') . '"');
-$sql->setQuery('DELETE FROM `' . rex::getTable('yform_field') . '` WHERE table_name = "' . rex::getTable('ycom_user_token') . '"');
-$sql->setQuery('DELETE FROM `' . rex::getTable('yform_history') . '` WHERE table_name = "' . rex::getTable('ycom_user_token') . '"');
+if (rex_sql_table::get(rex::getTable('ycom_user_token'))->exists()) {
+    $sql->setQuery('DELETE FROM `' . rex::getTable('yform_table') . '` WHERE table_name = "' . rex::getTable('ycom_user_token') . '"');
+    $sql->setQuery('DELETE FROM `' . rex::getTable('yform_field') . '` WHERE table_name = "' . rex::getTable('ycom_user_token') . '"');
+    $sql->setQuery('DELETE FROM `' . rex::getTable('yform_history') . '` WHERE table_name = "' . rex::getTable('ycom_user_token') . '"');
+}
 
 rex_sql_table::get(rex::getTable('article'))
     ->removeColumn('ycom_auth_type')