I'm working with PhpExcel 1.8.0 in Codeigniter 3.0.0, Codeigniter is running in WAPP Stack Server 5.4.39-0 (all of them should be the latest versions, i think).
This:
$this->excel->getActiveSheet()->setCellValue('G5', "SUMA(G1:G4)");
Displays the string "SUMA" in the downloaded file with the coordinates, but adding the "=" causes the server to answer with an error, which is interpreted by Chrome as "ERR_INVALID_RESPONSE".
The specified range is populated with integer values.
I'm not really used to Wapp, the Apache log files shows no relevant error for this issue, i would really appreciate to know a way i could debug this.
Thanks in advance.