Migrate themes from OJS 2.4.8-1 to OJS 3

Software Support
1

I’m in the process to migrate our server with 4 journal from OJS 2.4.8-1 to OJS 3.
I’ve followed the instruction download and install Full Package.
But I’m unable to migrate the themes that journal used.
How can I do that ?
I ve tried to copy my old themes from the old installation it’s not working
I ve tried uplaod my old themes from the old installation it’s not working
I ve got the following error

PHP Fatal error: Class XXXXThemePlugin contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (ThemePlugin::init) /ojs-3.1.1/plugins/themes/XXXXTheme/XXXXTheme.inc.php on line 31, referer: https://revues-v3-travail.cirad.fr/index.php/index/admin/settings

Thank you in advance
Best regards

2

Hi @tdolley,

OJS 2.x themes won’t work with OJS 3.x – if this is something you wrote, you’ll have to adapt your CSS to the new theming structures in OJS. (See the PKP Theming Guide.)

Regards,
Alec Smecher
Public Knowledge Project Team

3

Hola, me podrías ayudar estoy iniciando en ojs… Cual versión me recomendarías usar