When I tried to import products from an old website the wordpress return me this error:
Fatal error: Cannot declare class WXR_Parser, because the name is already in use in ~/webapps/biocorpore/wp-content/plugins/woodmart-core/importer/parsers.php on line 12
Thank you so much for purchasing our theme and contacting our support center.
It seems that you have some import plugin that conflicts with our WoodMart core. Try to deactivate our plugin for the time you are importing your products. And then activate it again.