fix dict access error

Signed-off-by: Sebastian Schüpbach <sebastian.schuepbach@unibas.ch>

mediametadatatodb_app/resources/processor.py

@@ -96,7 +96,7 @@ class RecordProcessor:
         logging.error("Indexing failed. Aborting...")
         for key in self.processed_records.keys():
             self.reporter.send_message(key, 'FATAL', f'Indexing failed: {ex}',
-                                       self.processed_records['headers'])
+                                       self.processed_records[key]['headers'])
 
     def index(self):
         for key in self.processed_records.keys():
@@ -131,17 +131,17 @@ class RecordProcessor:
                                            ('DIGITAL OBJECT: {} -- THUMBNAIL: {}' +
                                             ' -- AUDIO SNIPPET: {}').format(
                                                dig_obj_msg, thumbnail_msg, audio_snip_msg
-                                           ), self.processed_records['headers'])
+                                           ), record['headers'])
             elif ok:
                 self.indexer.commit()
                 self.reporter.send_message(key, 'FATAL',
                                            ('DIGITAL OBJECT: {} -- THUMBNAIL: {} ' +
                                             '-- AUDIO SNIPPET: {}')
                                            .format(dig_obj_msg, thumbnail_msg, audio_snip_msg),
-                                           self.processed_records['headers'])
+                                           record['headers'])
             else:
                 self.indexer.rollback()
                 self.reporter.send_message(key, 'FATAL',
                                            f'Indexing failed: {err_msg}',
-                                           self.processed_records['headers'])
+                                           record['headers'])
         self.processed_records.clear()