The Timeliness report is not generated for large amounts of data

The Timeliness report is not generating properly for large amounts of data. This is happening on both browsers (Chrome and Firefox)

Pre-conditions:

• Knowing the credentials a the System Administrator (e.g. administrator);

• Logging into the application and navigating to Reports > View Reports.

Reproduction steps:

1. Click the "Timeliness Report" link.

2. Set the Program Name and Period Name. Leave District field empty. Click the "Generate" button:

   • Program Name: Family Planning

   • Period Name: Jan2017

   • Format: PDF

Actual result:

The report is not loaded, instead of it 504 error occurs.

Expected result:

The report is loading properly for any amounts of data.