a lot of fixes, implementing abstract product api endpoints

src/index.js

@@ -1,6 +1,7 @@
 import express from 'express';
 import UserRouter from './routers/user.js';
 import GroupRouter from './routers/group.js';
+import AbstractProductRouter from './routers/abstractproduct.js';
 // import AdminRouter from './routers/admin.js';
 import log from './utils/log.js'
 
@@ -12,6 +13,7 @@ app.use(express.urlencoded({extended: true}));
 app.use(express.json());
 app.use('/api/user/', UserRouter);
 app.use('/api/group/', GroupRouter);
+app.use('/api/abstractproduct', AbstractProductRouter);
 // app.use('/api/admin/', AdminRouter);
 
 app.listen(config.port, () => {