Process: com.example.derek.trademeapi, PID: 14475 java.lang.AssertionError: LEFT at android.support.constraint.solver.widgets.Guideline.getAnchor(Guideline.java:159 ...

I currently using constraint-layout by the following lib. implementation 'com.android.support.constraint:constraint-layout:1.0.2' By update warning in the android studio, I Update this to.

Highlighted features of version 4.0 include a new Motion Editor to help with animation in apps (with support for editing constraint sets, transitions, keyframes, and view attributes), a Build Analyzer ...