Are you able to determine what version of the SWORD plugin youāre using? Iām not sure what you mean by āversion adapted to OJS 3.3ā - can you clarify where exactly you got the plugin from. So far as I can tell, the plugin may not be fully tested for OJS 3.3 and is thus not added to the plugin gallery. There has been some recent discussion on the use of the SWORD plugin here too: SWORD Setup for Deposits from OPS to OJS - #21 by talknshare
The best bet with installing plugins is to install them from the plugin gallery, rather than via Github. That said, the SWORD plugin has still not be tested / deemed compatible for OJS 3.3 yet (see here: OJS/OMP/OPS 3.3.0 plugin updates Ā· Issue #6691 Ā· pkp/pkp-lib Ā· GitHub). Iām flagging @asmecher here as he might want to speak to the issue with the missing schema.xml file and whether or not this will have to be taken into account when updating the plugin for 3.3.
I have downloaded the plugin sword-v1_0_6-0.tar.gz, I have installed it in OJS 3.3.0-5 and it works for me, but I had to comment some lines SwordImportExportPlugin file (the $statementCandidates and $ssi variables).
Therefore, now itās working for me the Sword plugin for OJS 3.3.0-5.