API does not return data for single products

[adrianomartinelli]

I am not able to request data for a single product but only for all products:

• works: https://oec.world/hs92/export/2000/che/usa/all/
• works: https://oec.world/hs92/export/2000/che/usa/show/
• does not work: https://oec.world/hs92/export/2000/che/usa/7227/