Need Urgent help

Hello I am Eshael i am new to keil. I am getting the linking error below .

.\Obj\BD-632.axf: Error: L6406E: No space in execution regions with .ANY selector matching mainrtx.o(.bss).
.\Obj\BD-632.axf: Error: L6406E: No space in execution regions with .ANY selector matching printer.o(.bss).


I need urgent help if any one can help me out I will be so greatfull for I am running out of time for my project.

Thank you.

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