Seg Fault While saving attributes to .h5 file

I had to build h5py (2.10.0) on top of a older version version of hdf5 (1.8.12) and use it for running python in simulink model. But I believe because of this, while I am trying to save the weights, I am getting an error while saving the attr to the file.

After commenting the lines as shown in the image https://ibb.co/8sYm59j it works fine.

I tried running the same lines in a virtual env with h5py (unmodified) and it works fine. https://ibb.co/7kzCs8T

When i ran the same using the modified h5py, the process terminates. while running this using pycharm console "Process finished with exit code -1073741819 (0xC0000005)" error is thrown.