Need a clone() here because chunk() appears to change the $query inst…

…ance

src/Sheet.php

@@ -472,7 +472,7 @@ public function fromQuery(FromQuery $sheetExport, Worksheet $worksheet)
             return;
         }
 
-        $query->chunk($this->getChunkSize($sheetExport), function ($chunk) use ($sheetExport) {
+        $query->clone()->chunk($this->getChunkSize($sheetExport), function ($chunk) use ($sheetExport) {
             $this->appendRows($chunk, $sheetExport);
         });
     }