[ShopGUIPlus] "Invalid or missing item type specified" errors

[NOPL]

I'm using ShopGUI+ 1.44.1, The plugin configures successfully without any errors and creates new configuration files embedded in your jar file. But when I start the server, I get error messages like those with certain items like nether_wart or sugar cane

Error:

[ShopGUIPlus] Error occurred when loading farm > 10, item not loaded: Invalid or no material name specified

I tried to run this plugin at 1.8.8 PaperSpigot and 1.12.2 PaperSpigot but it didn't make any differences, Thanks for reading, have a nice day !