Judging by the backtrace this is the bug fixed by commit 92b3eeadd9bc, which is in current git master and will be in the imminent 2.0.0-rc3.
Judging by the backtrace this is the bug fixed by commit 92b3eeadd9bc, which is in current git master and will be in the imminent 2.0.0-rc3.