Instrumentation Amplifier on Cadence

Hi everyone,

I am trying to make a current-feedback IA on Cadence, using a design given in a paper, but I am getting errors. Do I need to include a source follower at the output to lower the output resistance? Or include a buffer? How do you make a buffer using CMOS technology? Any help or ideas would be really appreciated!!
I have included a screenshot of my circuit and testbench:




This is the error I am currently getting:
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ERROR (ADEXL-5025): Preparation to run the simulation is failed for the run Interactive.1, point 1, test ia:IApapertestbench:1, received error:

Error:

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Error while preparing to run the simulation.

Netlist directory "/home/uceembw/current feedback IA/Sim/ia/IApapertestbench/adexl/results/data/Interactive.1/1/ia:IApapertestbench:1/netlist" does not exist

For details open log: /home/uceembw/current feedback IA/logs_uceemjw/logs0/Job1.log for the point: (1 1)

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Thank you!

Best wishes,
qwerty