Why do I get this error with mbedtls when doing "west update"?

Question

Why do I get the folowing error with mbedtls when doing "west update"? 
 
 Possibly related issues: * devzone.nordicsemi.com/.../west-update-blocks-and-fails-on-mbedtls (Didn't help)

E3V3A · Answer

Yes. Indeed west was having trouble with mbedtls due to a developer error. Updating west and and its dependencies fixed the error. 
 
 The easiest way to overcome the 2nd problem (above) is to make a git checkout and force it to remove any old stuff. 
 cd ${NORDICS}/ncs/nrf
git checkout -f master
git pull
git checkout v1.0.0
west update
 
 Please see full procedure here: https://devzone.nordicsemi.com/f/nordic-q-a/51740/how-can-we-flash-the-original-factory-out-of-the-box-fw-for-the-nrf9160