Fix for single row/column tables... though very weird to create manually in MS Excel, because creating a single row table always creates a two row table (1 row headers and 1 row data). But subsequently hiding the header row; and then deleting that row will create such a table.

src/PhpSpreadsheet/Worksheet/Table.php

@@ -298,8 +298,8 @@ class Table
         }
 
         [$width, $height] = Coordinate::rangeDimension($range);
-        if ($width < 1 || $height < 2) {
-            throw new PhpSpreadsheetException('The table range must be at least 1 column and 2 rows');
+        if ($width < 1 || $height < 1) {
+            throw new PhpSpreadsheetException('The table range must be at least 1 column and row');
         }
 
         $this->range = $range;

tests/PhpSpreadsheetTests/Reader/Xlsx/Issue3277Test.php

@@ -15,6 +15,6 @@ class Issue3277Test extends TestCase
 
         $array = $spreadsheet->getActiveSheet()->toArray();
 
-        $this->assertSame('data', $array[0][0]);
+        self::assertSame('data', $array[0][0]);
     }
 }

tests/PhpSpreadsheetTests/Worksheet/Table/TableTest.php

@@ -207,9 +207,8 @@ class TableTest extends SetupTeardown
     {
         return [
             ['A1'],
-            ['A1:A1'],
             ['B1:A4'],
-            ['A1:D1'],
+            ['B12:B4'],
             ['D1:A1'],
         ];
     }