I seldom use the LSA function. When trying I experienced the following:
Two surveys (modified copys):
Full responses 81
Incomplete responses 1055
Response summary Total responses 1136
Full responses 32
Incomplete responses 3142
Total responses 3174
Export Survey archive (.lsa) works fine when exporting the survey with 1137 responses.
When trying to export the survey with 3175 responses only a blank page is displayed.
It doesn't look or feel like a timeout from httpd or php. The blank is displayed in the same timerange as when the browser is offering the file dialog. No error messages.
I really thibnk it's a memory or a time out issue.
Server log ?
Assistance on LimeSurvey forum and LimeSurvey core development are on my free time.
I'm not a LimeSurvey GmbH member. -
Professional support
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Plugins, theme and development
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I confirm what Denis said :
- when activating the debug mode, we get the following error : "Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 90 bytes) in /••••••••/framework/db/CDbDataReader.php on line 121"
- when increasing the max PHP memory, the problem disappears.