Germany flopped in its negative yield bond sales.

https://finance.yahoo.com/news/germany-sees-anemic-demand-30-100930717.html

The 30y Germany bonds were severely undersubscribed and this denoted that the investors were rejecting the negative yield bonds.  We did state that the current world was not built for a negative yield environment.  The world is in a conundrum now.

http://sg-stock.blogspot.com/2019/08/a-new-world-unchartered-territory.html

When the governments cannot raise funds for economic developments in a negative yield environment, they'll have to raise interest rates to attract investors to buy their bonds but the economic situation doesn't allow interest rates to be raised.

When the strongest economy, Germany, cannot raise enough funds, the other weaker European economies cannot raise funds too.  Therefore, the EU is badly in need of cheap funding and will need TLTRO urgently in September.

http://sg-stock.blogspot.com/2019/03/what-is-targeted-longer-term.html