***aborting after invariant() failure
2019-02-14T11:25:59.221+0530 F - [TTLMonitor] Got signal: 6 (Abort trap: 6).
0x102419739 0x102418f5d 0x7fff59183f5a 0x7fff58f956d0 0x7fff58faf30a 0x1023876ea 0x10218e0fb 0x10218d59c 0x1021723f6 0x102170aa9 0x101c20b26 0x101b4d3b1 0x101b4d691 0x101b5c3e8 0x101b40326 0x101b5c3e8 0x101b3c805 0x101b5c3e8 0x101e58656 0x101e581a7 0x101e593e1 0x102199ca4 0x10219882f 0x10219833c 0x10238c10a 0x10238de0e 0x7fff5918d6c1 0x7fff5918d56d 0x7fff5918cc5d
----- BEGIN BACKTRACE -----
{"backtrace":[
...........
.......
.......
----- END BACKTRACE -----
Abort trap: 6