Open3d issues with PyCharm

I am trying to visualize 3D data (.stl) using open3d.
With PyCharm I am facing the issue that it does only generate a TriangleMesh from one file. Anything I try to read after the first one does not work. "Goggles v5.stl" and "Goggles v5 1.stl" are the exact same files, just different names. With following code I get the following output:

[Open3D WARNING] Unable to load file Goggles v5_1.stl with ASSIMP
TriangleMesh with 12212 points and 4742 triangles.
TriangleMesh with 0 points and 0 triangles.

When I use Python IDLE it works perfectly fine:
TriangleMesh with 12212 points and 4742 triangles.
TriangleMesh with 12212 points and 4742 triangles.

Any help is appreciated, thanks in advance and best regards!

import open3d as o3d

mesh = o3d.io.read_triangle_mesh("Goggles v5.stl")
mesh.compute_vertex_normals()
mesh.paint_uniform_color([0,1,0])
meshz = o3d.io.read_triangle_mesh("Goggles v5_1.stl")


print(mesh)
print(meshz)