PHP warning: fromRow should be compatible

OJS 3.0.2 with PHP 7.1.
I have the php log file being filled by the following warning:
Declaration of SubmissionFileDAO::FromRow($row) should be compatible with PKPSubmissionFileDAO::FromRow($row, $fileImplementation)

How can I overcome it?

Hi @Francesco,

PHP 7.x reports a number of warnings with OJS 3.0.2; these are cosmetic and can be ignored, but need to be sent to the system’s error log rather than the browser so that they don’t interfere. These have been resolved in the git master branch, which will be released with OJS 3.1.

Alec Smecher
Public Knowledge Project Team