I've tested others not working, hope this works. Thank you.
EDIT: And the same error with QB
[ script:core_drugs] Error loading script server/main.lua in resource core_drugs: @core_drugs/server/main.lua:310: attempt to index a nil value (global 'ESX')
[ script:core_drugs] stack traceback:
[ script:core_drugs] @core_drugs/server/main.lua:310: in main chunk
[ c-scripting-core] Failed to load script server/main.lua.
[ script:core_drugs] Error loading script UsableItems.lua in resource core_drugs: @core_drugs/UsableItems.lua:5: attempt to index a nil value (global 'ESX')
[ script:core_drugs] stack traceback:
[ script:core_drugs] @core_drugs/UsableItems.lua:5: in main chunk
EDIT: And the same error with QB
[ script:core_drugs] Error loading script server/main.lua in resource core_drugs: @core_drugs/server/main.lua:310: attempt to index a nil value (global 'ESX')
[ script:core_drugs] stack traceback:
[ script:core_drugs] @core_drugs/server/main.lua:310: in main chunk
[ c-scripting-core] Failed to load script server/main.lua.
[ script:core_drugs] Error loading script UsableItems.lua in resource core_drugs: @core_drugs/UsableItems.lua:5: attempt to index a nil value (global 'ESX')
[ script:core_drugs] stack traceback:
[ script:core_drugs] @core_drugs/UsableItems.lua:5: in main chunk