diff --git a/public/course/format/classes/output/local/overview/overviewtable.php b/public/course/format/classes/output/local/overview/overviewtable.php
index 0a8d4d663bf..bccd9f8ea8b 100644
--- a/public/course/format/classes/output/local/overview/overviewtable.php
+++ b/public/course/format/classes/output/local/overview/overviewtable.php
@@ -228,6 +228,34 @@ class overviewtable implements externable, named_templatable, renderable {
      * @return array An associative array containing the overview items for the activity.
      */
     private function load_overview_items_from_activity(activityoverviewbase $overview): array {
+        $row = $this->get_activity_columns($overview);
+        $row = array_filter($row, function ($item) {
+            return $item !== null;
+        });
+
+        $this->register_columns($row);
+        $result = [];
+        foreach ($row as $key => $item) {
+            $item->set_key($key);
+            $result[$key] = $item;
+        }
+        return $result;
+    }
+
+    /**
+     * Get the columns for the activity overview.
+     *
+     * This method retrieves the columns that can be displayed in the overview table
+     * for a specific activity. However, column with null values may be filtered if
+     * all the activities do not have any content for that column.
+     *
+     * @param activityoverviewbase $overview The activity overview instance.
+     * @return array An associative array of column data.
+     */
+    private function get_activity_columns(activityoverviewbase $overview): array {
+        // It is highly improbable that an activity has an error (usually because of an erroneous group
+        // configuration). For those cases, we only use the activity name and prevent the plugin from
+        // doing any more calculations.
         if ($overview->has_error()) {
             return ['name' => $overview->get_name_overview()];
         }
@@ -250,18 +278,7 @@ class overviewtable implements externable, named_templatable, renderable {
         // Actions are always the last column, if any.
         $row['actions'] = $overview->get_actions_overview();
 
-        $row = array_filter($row, function ($item) {
-            return $item !== null;
-        });
-
-        $this->register_columns($row);
-
-        $result = [];
-        foreach ($row as $key => $item) {
-            $item->set_key($key);
-            $result[$key] = $item;
-        }
-        return $result;
+        return $row;
     }
 
     /**
diff --git a/public/course/format/tests/external/get_overview_information_test.php b/public/course/format/tests/external/get_overview_information_test.php
index 4d568b1730d..e7459718231 100644
--- a/public/course/format/tests/external/get_overview_information_test.php
+++ b/public/course/format/tests/external/get_overview_information_test.php
@@ -143,4 +143,87 @@ final class get_overview_information_test extends \externallib_advanced_testcase
         }
         return null;
     }
+
+    /**
+     * Test the webservice when the group configuration is erroneous.
+     * In those cases, the table should only return the activity name.
+     *
+     * @return void
+     */
+    public function test_execute_when_group_error(): void {
+        $this->resetAfterTest();
+
+        $generator = $this->getDataGenerator();
+        $course = $generator->create_course();
+        $activityfail = $generator->create_module('assign', ['course' => $course->id, 'groupmode' => SEPARATEGROUPS]);
+        $user = $generator->create_and_enrol($course, 'student');
+        $generator->create_group(['courseid' => $course->id, 'name' => 'g1']);
+        $generator->create_group(['courseid' => $course->id, 'name' => 'g2']);
+
+        $this->setUser($user);
+
+        $result = get_overview_information::execute($course->id, 'assign');
+        $result = external_api::clean_returnvalue(get_overview_information::execute_returns(), $result);
+
+        $this->assertEquals($course->id, $result['courseid']);
+        $this->assertEquals(true, $result['hasintegration']);
+
+        $this->assertCount(1, $result['headers']);
+        $headertelement = $this->find_by_attribute($result['headers'], 'key', 'name');
+        $this->assertEquals(get_string('name'), $headertelement['name']);
+        $this->assertEquals('name', $headertelement['key']);
+
+        $this->assertCount(1, $result['activities']);
+        $activity = $this->find_by_attribute($result['activities'], 'cmid', (int) $activityfail->cmid);
+        $this->assertCount(1, $activity['items']);
+        $this->assertEquals(true, $activity['haserror']);
+        $namecell = $activity['items'][0];
+        $namecell = $activity['items'][0];
+        $this->assertEquals('name', $namecell['key']);
+        $this->assertEquals(get_string('name'), $namecell['name']);
+
+        // Add a second activity to validate the overview table is populated with all columns now.
+        $activityok = $generator->create_module('assign', ['course' => $course->id, 'groupmode' => VISIBLEGROUPS]);
+
+        $result = get_overview_information::execute($course->id, 'assign');
+        $result = external_api::clean_returnvalue(get_overview_information::execute_returns(), $result);
+
+        $this->assertEquals($course->id, $result['courseid']);
+        $this->assertEquals(true, $result['hasintegration']);
+
+        $this->assertCount(3, $result['headers']);
+        $headertelement = $this->find_by_attribute($result['headers'], 'key', 'name');
+        $this->assertEquals(get_string('name'), $headertelement['name']);
+        $this->assertEquals('name', $headertelement['key']);
+        $headertelement = $this->find_by_attribute($result['headers'], 'key', 'submissionstatus');
+        $this->assertEquals(get_string('submissionstatus', 'assign'), $headertelement['name']);
+        $this->assertEquals('submissionstatus', $headertelement['key']);
+        $headertelement = $this->find_by_attribute($result['headers'], 'key', 'Grade');
+        $this->assertEquals(get_string('gradenoun'), $headertelement['name']);
+        $this->assertEquals('Grade', $headertelement['key']);
+
+        $this->assertCount(2, $result['activities']);
+
+        // The activity with the group error should be the same.
+        $activity = $this->find_by_attribute($result['activities'], 'cmid', (int) $activityfail->cmid);
+        $this->assertCount(1, $activity['items']);
+        $this->assertEquals(true, $activity['haserror']);
+        $namecell = $activity['items'][0];
+        $namecell = $activity['items'][0];
+        $this->assertEquals('name', $namecell['key']);
+        $this->assertEquals(get_string('name'), $namecell['name']);
+
+        $activity = $this->find_by_attribute($result['activities'], 'cmid', (int) $activityok->cmid);
+        $this->assertCount(3, $activity['items']);
+        $this->assertEquals(false, $activity['haserror']);
+        $namecell = $activity['items'][0];
+        $this->assertEquals('name', $namecell['key']);
+        $this->assertEquals(get_string('name'), $namecell['name']);
+        $submissionstatuscell = $this->find_by_attribute($activity['items'], 'key', 'submissionstatus');
+        $this->assertEquals('submissionstatus', $submissionstatuscell['key']);
+        $this->assertEquals(get_string('submissionstatus', 'assign'), $submissionstatuscell['name']);
+        $gradecell = $this->find_by_attribute($activity['items'], 'key', 'Grade');
+        $this->assertEquals('Grade', $gradecell['key']);
+        $this->assertEquals(get_string('gradenoun'), $gradecell['name']);
+    }
 }