2564611 - IQ server failed to start due to 'Unit List Internal Inconsistency' error.

The IQ server failed to start up due to an error below.

I. 11/15 09:24:11. Starting database "testdb" (/home/sybase/data/testdb.db) at Wed Nov 15 2017 09:24
E. 11/15 09:24:22. Error: Unit List Internal Inconsistency:
-- (/cm/iqa/include/s_unitList.h 466) (1,1,0)
E. 11/15 09:24:22. Unit List Internal Inconsistency:
-- (/cm/iqa/include/s_unitList.h 466) (1,1,0)
I. 11/15 09:24:22. Database server shutdown due to startup error
I. 11/15 09:24:22. Database server stopped at Wed Nov 15 2017 09:24
DBSPAWN ERROR: -82

A notable thing is that the timestamp of catalog files are very different as below.
=========================================================
-r--r--r-- 1 sybase sybase 17702912 Nov 9 10:15 testdb.db
-rw------- 1 sybase sybase 1526661120 Sep 7 13:34 testdb.log
=========================================================

SAP IQ 15.4 ESD 1
Linux 2.6.32-431.el6.x86_64

SAP IQ, IQ, Unit List Internal Inconsistency , KBA , BC-SYB-IQ , Sybase IQ , Problem