A first fix is :
In ZODB/blob.py:85, replace: for ref in self.readers+self.writers: with for ref in (self.readers or []) + (self.writers or []):
But that's not enough, the copied file is empty.
A first fix is :
In ZODB/blob.py:85, replace: self.writers:
for ref in self.readers+
with
for ref in (self.readers or []) + (self.writers or []):
But that's not enough, the copied file is empty.