# Error when run examples/3d/hex8/step09.config

**URL:** <https://community.geodynamics.org/t/error-when-run-examples-3d-hex8-step09-config/1472>\
**Category:** PyLith\
**Created:** [September 27, 2020, 8:14am UTC](https://community.geodynamics.org/t/error-when-run-examples-3d-hex8-step09-config/1472 "2020-09-27T08:14:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![gaoxinlei](https://avatars.discourse-cdn.com/v4/letter/g/b19c9b/32.png) [@gaoxinlei](https://community.geodynamics.org/u/gaoxinlei)\
**Post date:** [September 27, 2020, 8:14am UTC](https://community.geodynamics.org/t/error-when-run-examples-3d-hex8-step09-config/1472/1 "2020-09-27T08:14:50Z")

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Hi dear,  
I run 3d/hex8/step07-step09.cfg and get these errors indicating that it can’t get a module with name \_errors,how to solve it?  
need we install this module manually?

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/geodynamics/original/1X/aea98113a64208bbf61b2c9ad9765d07e90608e6.png)

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**Author:** ![baagaard](https://yyz2.discourse-cdn.com/flex036/user_avatar/community.geodynamics.org/baagaard/32/615_2.png) [@baagaard](https://community.geodynamics.org/u/baagaard)\
**Post date:** [September 28, 2020, 2:34pm UTC](https://community.geodynamics.org/t/error-when-run-examples-3d-hex8-step09-config/1472/2 "2020-09-28T14:34:32Z")

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The error message indicates that the `import h5py` failed. The PyLith binary comes with all dependencies, so there is nothing else to install. The error is likely a result of a conflict associated with the HDF5 C library. Our recommendation is that you unset PYTHONPATH and LD\_LIBRARY\_PATH in your shell (terminal) _before_ running `source setup.sh`. This helps prevent conflicts with libraries that may be already on your system that conflict with the ones needed by PyLith.

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<div class="post-metadata">

**Author:** ![gaoxinlei](https://avatars.discourse-cdn.com/v4/letter/g/b19c9b/32.png) [@gaoxinlei](https://community.geodynamics.org/u/gaoxinlei)\
**Post date:** [September 29, 2020, 1:50am UTC](https://community.geodynamics.org/t/error-when-run-examples-3d-hex8-step09-config/1472/3 "2020-09-29T01:50:44Z")

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HI baagaard,  
I use Docker to install pylith, so I believe the running environment of pylith is isolated from the host machine. I re-installed the software with Docker just after your comments and it ran successfully. but I still don’t know the reason cause this error since I did not modify any thing related to running environment.

Maybe it is caused by some mistakes of mine that unknown,thanks a lot.