fix: 1

src/util/pc4xlsl.ts

@@ -49,7 +49,7 @@ export const downloadPointsXLSL1 = async (
     body: JSON.stringify(tabs),
   }).then((res) => res.blob());
 
-  return saveAs(data, `${name}.xlsx`);
+  return saveAs(data, `${name}.xls`);
 };
 
 export const downloadPointsXLSL2 = async (
@@ -74,7 +74,7 @@ export const downloadPointsXLSL2 = async (
     body: JSON.stringify(tabs),
   }).then((res) => res.blob());
 
-  return saveAs(data, `${name}.xlsx`);
+  return saveAs(data, `${name}.xls`);
 };
 
 export const downloadPointsXLSL = async (