It is false detection of malware. fix for this will be available in next release.
https://github.com/q2a/question2answer/pull/607/files
You can fix now by doing below changes.
replace below function in qa-include/qa-theme-base.php file with this code.
public function body_hidden() { $this->output('<div style="position:absolute;overflow:hidden;clip:rect(0 0 0 0);height:0;width:0;margin:0;padding:0;border:0;">'); $this->waiting_template(); $this->output('</div>'); }
or you can just download below zip and update q2a.
https://github.com/q2a/question2answer/archive/bugfix.zip
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