null in claim description

lbry/db/query_context.py

@@ -436,9 +436,9 @@ class BulkLoader:
             claim_record['claim_type'] = TXO_TYPES['stream']
             claim_record['stream_type'] = STREAM_TYPES[guess_stream_type(claim_record['media_type'])]
             claim_record['media_type'] = claim.stream.source.media_type
-            claim_record['title'] = claim.stream.title
-            claim_record['description'] = claim.stream.description
-            claim_record['author'] = claim.stream.author
+            claim_record['title'] = claim.stream.title.replace('\x00', '')
+            claim_record['description'] = claim.stream.description.replace('\x00', '')
+            claim_record['author'] = claim.stream.author.replace('\x00', '')
             if claim.stream.video and claim.stream.video.duration:
                 claim_record['duration'] = claim.stream.video.duration
             if claim.stream.audio and claim.stream.audio.duration:

lbry/schema/tags.py

@@ -6,7 +6,11 @@ WEIRD_CHARS_RE = re.compile(r"[#!~]")
 
 
 def normalize_tag(tag: str):
-    return MULTI_SPACE_RE.sub(' ', WEIRD_CHARS_RE.sub(' ', tag.lower().replace("'", ""))).strip()
+    return MULTI_SPACE_RE.sub(
+        ' ', WEIRD_CHARS_RE.sub(
+            ' ', tag.lower().replace("'", "").replace('\x00', '')
+        )
+    ).strip()
 
 
 def clean_tags(tags: List[str]):

tests/unit/schema/test_tags.py

@@ -14,6 +14,7 @@ class TestTagNormalization(unittest.TestCase):
         tag('tag', 'T\'ag')
         tag('t ag', '\tT  \nAG   ')
         tag('tag hash', '#tag~#hash!')
+        tag('foobar', 'foo\x00bar')
 
     def test_clean_tags(self):
         self.assertEqual(['tag'], clean_tags([' \t #!~', '!taG', '\t']))