I think this has to do with your skill level.
If you have everything fully skilled with crafting plastic it only takes 1 barrel of petroleum!
I do not think it is possible to make this another way unfortunately
I just checked my files and installed the mod on a fresh version of Eco. For me, it is working fine and the server starts correctly. Are you sure you dragged the files in the correct corresponding folders as mentioned in the Installation Guide?
If it is still not working let me know and we will...
First of all, big thanks to @Looh & @mampf for this forum.
For me, it was the one with the highest quality out of all and a very friendly and helpful community. Also, this is the first time I tried making mods for a game and I really enjoyed it and I will definitely continue this once I have...
I did not notice that the mod doesn't work anymore. Thank you for the information for the others in the meantime.
However, I updated the mod again and it is working fine now. If anyone has any problems feel free to contact me via the forum or discord (NoXid#8912)