Merge pull request #101 from fritzmg/patch-1

Skip migration if field does not exist

src/StyleManager/Sync.php

@@ -18,6 +18,7 @@
 use Contao\System;
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\Exception;
+use Doctrine\DBAL\Schema\Column;
 use DOMDocument;
 use DOMElement;
 use DOMNode;
@@ -58,6 +59,14 @@ public function shouldRunObjectConversion($table = null): bool
             return false;
         }
 
+        $columnNames = array_map(static function (Column $column): string {
+            return $column->getName();
+        }, $schemaManager->listTableColumns($table));
+
+        if (!\in_array('styleManager', $columnNames, true)) {
+            return false;
+        }
+
         $objConfig = $this->connection->fetchFirstColumn("SELECT styleManager FROM " . $table . " WHERE styleManager IS NOT NULL");
         $archives = StyleManagerArchiveModel::countAll();