41-group-not…

input_test.dat
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			material elastic [
			name = bulk
			rho = 2500
			nu = 0.29
			E = 70e9
			# finite_deformation = 1
			]

			material cohesive_exponential [
			name = coh
			sigma_c = 1.5e6
			beta = 1
			delta_c = 1e-4
			exponential_penalty = true
			contact_tangent = 1.0
			]

			mesh parameters [

			cohesive_surfaces = coh

			]