Detailed upgrade guide from OJS to 3.1 or higher

I need a detailed guide from someone who has tried it and does not give errors on updating from OJS to 3.x.x.x.
We are trying to update several magazines from this version to higher than 3.1 and we are getting an error.
Thanks in advance and greetings

Hi @achaple,

You can find our upgrade guide here:

It doesn’t cover specific error messages, but, if you like, you can post your error messsages here and others may be able to assist.

PKP Team