Error message

• Notice: tempnam(): file created in the system's temporary directory in drupal_tempnam() (line 2657 of includes/file.inc).
• Warning: file_put_contents(temporary://fileBIFIyP): Failed to open stream: "DrupalTemporaryStreamWrapper::stream_open" call failed in file_unmanaged_save_data() (line 2024 of includes/file.inc).
• The file could not be created.
• Notice: tempnam(): file created in the system's temporary directory in drupal_tempnam() (line 2657 of includes/file.inc).
• Warning: file_put_contents(temporary://fileEEEvJT): Failed to open stream: "DrupalTemporaryStreamWrapper::stream_open" call failed in file_unmanaged_save_data() (line 2024 of includes/file.inc).
• The file could not be created.
• Notice: tempnam(): file created in the system's temporary directory in drupal_tempnam() (line 2657 of includes/file.inc).
• Warning: file_put_contents(temporary://file7bH8Ao): Failed to open stream: "DrupalTemporaryStreamWrapper::stream_open" call failed in file_unmanaged_save_data() (line 2024 of includes/file.inc).
• The file could not be created.
• Notice: tempnam(): file created in the system's temporary directory in drupal_tempnam() (line 2657 of includes/file.inc).
• Warning: file_put_contents(temporary://filenyCnC9): Failed to open stream: "DrupalTemporaryStreamWrapper::stream_open" call failed in file_unmanaged_save_data() (line 2024 of includes/file.inc).
• The file could not be created.
• Notice: tempnam(): file created in the system's temporary directory in drupal_tempnam() (line 2657 of includes/file.inc).
• Warning: file_put_contents(temporary://file1OqYUi): Failed to open stream: "DrupalTemporaryStreamWrapper::stream_open" call failed in file_unmanaged_save_data() (line 2024 of includes/file.inc).
• The file could not be created.
• Notice: tempnam(): file created in the system's temporary directory in drupal_tempnam() (line 2657 of includes/file.inc).
• Warning: file_put_contents(temporary://fileK6Ky9n): Failed to open stream: "DrupalTemporaryStreamWrapper::stream_open" call failed in file_unmanaged_save_data() (line 2024 of includes/file.inc).
• The file could not be created.
• Notice: tempnam(): file created in the system's temporary directory in drupal_tempnam() (line 2657 of includes/file.inc).
• Warning: file_put_contents(temporary://fileSoFUv8): Failed to open stream: "DrupalTemporaryStreamWrapper::stream_open" call failed in file_unmanaged_save_data() (line 2024 of includes/file.inc).
• The file could not be created.