Add additional empty checks after field protection.

Author: Alex Schmitz

system/BaseModel.php

@@ -728,6 +728,13 @@ public function insert($data = null, bool $returnID = true)
 		// strip out created_at values.
 		$data = $this->doProtectFields($data);
 
+		// doProtectFields() can further remove elements from
+		// $data so we need to check for empty dataset again
+		if (empty($data))
+		{
+			throw DataException::forEmptyDataset('insert');
+		}
+
 		// Set created_at and updated_at with same time
 		$date = $this->setDate();
 
@@ -866,6 +873,13 @@ public function update($id = null, $data = null): bool
 		// strip out updated_at values.
 		$data = $this->doProtectFields($data);
 
+		// doProtectFields() can further remove elements from
+		// $data so we need to check for empty dataset again
+		if (empty($data))
+		{
+			throw DataException::forEmptyDataset('update');
+		}
+
 		if ($this->useTimestamps && $this->updatedField && ! array_key_exists($this->updatedField, $data))
 		{
 			$data[$this->updatedField] = $this->setDate();