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://fileaVFcRT): 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://fileyHbxsK): 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://fileGMUCzu): 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://file2tUGIf): 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://fileGLTImi): 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://fileOam5SM): 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://file2g3q8i): 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.