Got invalid response from API request: http://***/piwik/index.php?module=API&method=API.get&idSite=5&period=day&date=last52&format=php&token_auth=20c77ed16e29173258c0e22802376a3f&trigger=archivephp. The response was empty. (no replies)

When I am trying to do archiving my reports in windows system through CMD prompt through executing thye below comand:

C:\Program Files\PHP\v5.3\
php.exe "C:\inetpub\wwwroot\piwik\console" core:archive --url=https://**/piwik/index.php/ > C:\Archive\piwik-archive-output.log

got the below error message:

INFO CoreConsole[2015-05-14 13:04:06] [d1a74] ---------------------------
INFO CoreConsole[2015-05-14 13:04:06] [d1a74] INIT
INFO CoreConsole[2015-05-14 13:04:06] [d1a74] Piwik is installed at: http://***/piwik/index.php/
INFO CoreConsole[2015-05-14 13:04:06] [d1a74] Running Piwik 2.9.1 as Super User
INFO CoreConsole[2015-05-14 13:04:08] [d1a74] ---------------------------
INFO CoreConsole[2015-05-14 13:04:08] [d1a74] NOTES
INFO CoreConsole[2015-05-14 13:04:08] [d1a74] - Reports for today will be processed at most every 3600 seconds. You can change this value in Piwik UI > Settings > General Settings.
INFO CoreConsole[2015-05-14 13:04:08] [d1a74] - Reports for the current week/month/year will be refreshed at most every 3600 seconds.
INFO CoreConsole[2015-05-14 13:04:14] [d1a74] - Will process 4 websites with new visits since 7 days 0 hours , IDs: 3, 5, 6, 9
INFO CoreConsole[2015-05-14 13:04:20] [d1a74] ---------------------------
INFO CoreConsole[2015-05-14 13:04:20] [d1a74] START
INFO CoreConsole[2015-05-14 13:04:20] [d1a74] Starting Piwik reports archiving...
INFO CoreConsole[2015-05-14 13:04:23] [d1a74] Skipped website id 3, already done 58 min 42s ago, Time elapsed: 2.566s

ERROR CoreConsole[2015-05-14 13:04:45] [d1a74] Got invalid response from API request: http://***/piwik/index.php?module=API&method=API.get&idSite=5&period=day&date=last52&format=php&token_auth=20c77ed16e29173258c0e22802376a3f&trigger=archivephp. The response was empty. This usually means a server error. This solution to this error is generally to increase the value of 'memory_limit' in your php.ini file. Please check your Web server Error Log file for more details.

ERROR CoreConsole[2015-05-14 13:04:45] [d1a74] Empty or invalid response '' for website id 5, Time elapsed: 22.448s, skipping

ERROR CoreConsole[2015-05-14 13:04:48] [d1a74] Got invalid response from API request: http://***/piwik/index.php?module=API&method=API.get&idSite=6&period=day&date=last52&format=php&token_auth=20c77ed16e29173258c0e22802376a3f&trigger=archivephp. The response was empty. This usually means a server error. This solution to this error is generally to increase the value of 'memory_limit' in your php.ini file. Please check your Web server Error Log file for more details.

ERROR CoreConsole[2015-05-14 13:04:48] [d1a74] Empty or invalid response '' for website id 6, Time elapsed: 2.855s, skipping
ERROR CoreConsole[2015-05-14 13:04:51] [d1a74] Got invalid response from API request: http://***/piwik/index.php?module=API&method=API.get&idSite=9&period=day&date=last52&format=php&token_auth=20c77ed16e29173258c0e22802376a3f&trigger=archivephp. The response was empty. This usually means a server error. This solution to this error is generally to increase the value of 'memory_limit' in your php.ini file. Please check your Web server Error Log file for more details.

ERROR CoreConsole[2015-05-14 13:04:51] [d1a74] Empty or invalid response '' for website id 9, Time elapsed: 3.134s, skipping
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] Done archiving!
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] ---------------------------
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] SUMMARY
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] Total visits for today across archived websites: 0
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] Archived today's reports for 0 websites
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] Archived week/month/year for 0 websites
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] Skipped 8 websites: no new visit since the last script execution
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] Skipped 1 websites day archiving: existing daily reports are less than 3600 seconds old
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] Skipped 0 websites week/month/year archiving: existing periods reports are less than 3600 seconds old
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] Total API requests: 0
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] done: 0/4 0%, 0 vtoday, 0 wtoday, 0 wperiods, 0 req, 31009 ms, 6 errors.
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] Time elapsed: 31.009s
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] ---------------------------
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] SCHEDULED TASKS
INFO CoreConsole[2015-05-14 13:04:51] [d1a74] Starting Scheduled tasks...
INFO CoreConsole[2015-05-14 13:04:54] [d1a74] task,output
Piwik\Plugins\ExamplePlugin\Tasks.myTask,Time elapsed: 0.000s
INFO CoreConsole[2015-05-14 13:04:54] [d1a74] done
INFO CoreConsole[2015-05-14 13:04:54] [d1a74] ---------------------------
INFO CoreConsole[2015-05-14 13:04:54] [d1a74] ---------------------------
INFO CoreConsole[2015-05-14 13:04:54] [d1a74] SUMMARY OF ERRORS
INFO CoreConsole[2015-05-14 13:04:54] [d1a74] Error: Got invalid response from API request: http://***/piwik/index.php?module=API&method=API.get&idSite=5&period=day&date=last52&format=php&token_auth=20c77ed16e29173258c0e22802376a3f&trigger=archivephp. The response was empty. This usually means a server error. This solution to this error is generally to increase the value of 'memory_limit' in your php.ini file. Please check your Web server Error Log file for more details.

INFO CoreConsole[2015-05-14 13:04:54] [d1a74] Error: Empty or invalid response '' for website id 5, Time elapsed: 22.448s, skipping
INFO CoreConsole[2015-05-14 13:04:54] [d1a74] Error: Got invalid response from API request: http://***/piwik/index.php?module=API&method=API.get&idSite=6&period=day&date=last52&format=php&token_auth=20c77ed16e29173258c0e22802376a3f&trigger=archivephp. The response was empty.

This usually means a server error. This solution to this error is generally to increase the value of 'memory_limit' in your php.ini file. Please check your Web server Error Log file for more details.
INFO CoreConsole[2015-05-14 13:04:54] [d1a74] Error: Empty or invalid response '' for website id 6, Time elapsed: 2.855s, skipping
INFO CoreConsole[2015-05-14 13:04:54] [d1a74] Error: Got invalid response from API request: http://***/piwik/index.php?module=API&method=API.get&idSite=9&period=day&date=last52&format=php&token_auth=20c77ed16e29173258c0e22802376a3f&trigger=archivephp. The response was empty. This usually means a server error. This solution to this error is generally to increase the value of 'memory_limit' in your php.ini file. Please check your Web server Error Log file for more details.

INFO CoreConsole[2015-05-14 13:04:54] [d1a74] Error: Empty or invalid response '' for website id 9, Time elapsed: 3.134s, skipping
ERROR CoreConsole[2015-05-14 13:04:54] [d1a74] 6 total errors during this script execution, please investigate and try and fix these errors.


**********************************

After looking up for the error we have increased the PHP Memory Limit to 3072M, but still the error do not go away.


Please help to resolve this issue: we are using PHP version 5.6, PIWIK 2.9.1
Thanks,
Subhajit