Hello @yanis-waabi,
did you update the code (with the code generation tool) after adding the LLCE module into the peripherals? The file with me is automatically created after updating the code in the following path:

Given that after you copied the file it worked correctly, we can discard problems with your include path.
About the Linker, after checking the examples, there are some other reserved memory regions you may need:
.llce_boot_end (NOLOAD) :
{
/* ------------------------------------ llce_boot_end sections ------------------------------------ */
. = ALIGN(0x4);
*(.llce_boot_end)
} > LLCE_BOOT_END
.can_43_llce_sharedmemory (NOLOAD) :
{
/* ------------------------------------ can_43_llce_sharedmemory sections ------------------------------------ */
. = ALIGN(0x4);
*(.can_43_llce_sharedmemory)
} > LLCE_CAN_SHAREDMEMORY
.lin_43_llce_sharedmemory (NOLOAD) :
{
/* ------------------------------------ lin_43_llce_sharedmemory sections ------------------------------------ */
. = ALIGN(0x4);
*(.lin_43_llce_sharedmemory)
} > LLCE_LIN_SHAREDMEMORY
.llce_meas_sharedmemory (NOLOAD) :
{
/* ------------------------------------ llce_meas_sharedmemory sections ------------------------------------ */
. = ALIGN(0x4);
*(.llce_meas_sharedmemory)
} > LLCE_MEAS_SHAREDMEMORY
Please check example Can_Llce_DS_Loopback_S32G274A_M7.
Let me know if this information was useful for your problem.