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-rw-r--r--src/server/db_op.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/server/db_op.py b/src/server/db_op.py
index 1a158f5b..0fc4b42f 100644
--- a/src/server/db_op.py
+++ b/src/server/db_op.py
@@ -115,7 +115,7 @@ class DBO_block_chain__commit(DB_op):
"""
@staticmethod
- def calc_blob_hash(blob):
+ def calc_blob_hash(blob=''):
"""
Calculate blog hash value
"""