Please note that, the version of OJS that you’re using is no longer supported by PKP. I recommend that you upgrade to the newest version of OJS. However, other community members may wish to offer assistance.
Upgrading instructions are available in the PKP Administrator’s Guide.
Information about the latest version of OJS can be found on the [PKP Website]https://pkp.sfu.ca/ojs/
You may also find similar posts on the forum about the issue you are experiencing, such as this one: How to remove index.php in the URL
-Roger
PKP Team