relax --gui-tests Relax_disp.test_r2eff_err_estimate
----
File "/Users/tlinnet/software/relax_trunk/specific_analyses/relax_disp/api.py", line 463, in get_param_values
values.append(get_value(spins=spins, sim_index=sim_index, param_name=param_name, spin_index=si, r20_key=r20_key))
File "/Users/tlinnet/software/relax_trunk/specific_analyses/relax_disp/parameters.py", line 393, in get_value
obj = getattr(spins[spin_index], param_name)
AttributeError: 'SpinContainer' object has no attribute 'r1'
task #7822(https://gna.org/task/index.php?7822): Implement user function to estimate R2eff and associated errors for exponential curve fitting.