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Warning: session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /var/www/tb-usercake/models/config.php on line 51
static Map conceptFileSizesByProgram() { new Map map; for (S programID : programsWithData()) { long l = conceptFileSize(programID); if (l != 0) map.put(programID, l); } ret map; }