Problem running Apache Gump [vmgump]

There is a problem with run 'vmgump' (06052020_000001), location : http://gump-vm.apache.org/
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The log ought be at:
   http://gump-vm.apache.org/gump_log.txt
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The last (up to) 50 lines of the log are :
SQL Error on [INSERT INTO gump_public.gump_repository_stats (repository_name, sequence_in_state) VALUES ('pcre', 195)] : (1292, "Incorrect datetime value: '0000-00-00 00:00:00' for column 'first' at row 1")
Traceback (most recent call last):
  File "/srv/gump/public/gump/python/gump/util/mysql.py", line 244, in insert
    affected = cursor.execute(statement)
  File "/usr/lib/python2.7/dist-packages/MySQLdb/cursors.py", line 250, in execute
    self.errorhandler(self, exc, value)
  File "/usr/lib/python2.7/dist-packages/MySQLdb/connections.py", line 50, in defaulterrorhandler
    raise errorvalue
OperationalError: (1292, "Incorrect datetime value: '0000-00-00 00:00:00' for column 'first' at row 1")
Traceback (most recent call last):
  File "bin/integrate.py", line 114, in <module>
    irun()
  File "bin/integrate.py", line 91, in irun
    result = getRunner(run).perform()
  File "/srv/gump/public/gump/python/gump/core/runner/runner.py", line 262, in perform
    return self.performRun()
  File "/srv/gump/public/gump/python/gump/core/runner/demand.py", line 214, in performRun
    self.finalize()    
  File "/srv/gump/public/gump/python/gump/core/runner/runner.py", line 240, in finalize
    self.run._dispatchEvent(FinalizeRunEvent(self.run))
  File "/srv/gump/public/gump/python/gump/core/run/gumprun.py", line 186, in _dispatchEvent
    actor._processEvent(event)
  File "/srv/gump/public/gump/python/gump/core/run/actor.py", line 83, in _processEvent
    self.processEvent(event)
  File "/srv/gump/public/gump/python/gump/core/run/actor.py", line 127, in processEvent
    self._processOtherEvent(event)
  File "/srv/gump/public/gump/python/gump/core/run/actor.py", line 184, in _processOtherEvent
    self.processOtherEvent(event)
  File "/srv/gump/public/gump/python/gump/actor/stats/statistician.py", line 66, in processOtherEvent
    self.updateStatistics()        
  File "/srv/gump/public/gump/python/gump/actor/stats/statistician.py", line 133, in updateStatistics
    self.db.putRepositoryStats(rs)     
  File "/srv/gump/public/gump/python/gump/actor/stats/mysql/statsdb.py", line 134, in putRepositoryStats
    self._putStats('gump_repository_stats', 'repository_name', stats)
  File "/srv/gump/public/gump/python/gump/actor/stats/mysql/statsdb.py", line 198, in _putStats
    self._with_reconnect_on_error(setter)
  File "/srv/gump/public/gump/python/gump/actor/stats/mysql/statsdb.py", line 272, in _with_reconnect_on_error
    return command(self._get_helper())
  File "/srv/gump/public/gump/python/gump/actor/stats/mysql/statsdb.py", line 194, in setter
    helper.set(table_name, column_name, stats.name, settings)
  File "/srv/gump/public/gump/python/gump/util/mysql.py", line 213, in set
    self.insert(table_name, settings)
  File "/srv/gump/public/gump/python/gump/util/mysql.py", line 244, in insert
    affected = cursor.execute(statement)
  File "/usr/lib/python2.7/dist-packages/MySQLdb/cursors.py", line 250, in execute
    self.errorhandler(self, exc, value)
  File "/usr/lib/python2.7/dist-packages/MySQLdb/connections.py", line 50, in defaulterrorhandler
    raise errorvalue
_mysql_exceptions.OperationalError: (1292, "Incorrect datetime value: '0000-00-00 00:00:00' for column 'first' at row 1")
Process Exit Code : 1
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Gump Version: 2.0.2-alpha-0003