# PyGPlates Installation error on Ubuntu 20.04

**URL:** https://discourse.gplates.org/t/pygplates-installation-error-on-ubuntu-20-04/483
**Category:** Bug Reports
**Created:** [23 February 2022 10:29 UTC](https://discourse.gplates.org/t/pygplates-installation-error-on-ubuntu-20-04/483 "2022-02-23T10:29:04Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![B92](https://discourse.gplates.org/letter_avatar_proxy/v4/letter/b/eada6e/32.png) [@B92](https://discourse.gplates.org/u/B92)
#### Post date: [28 February 2022 01:38 UTC](https://discourse.gplates.org/t/pygplates-installation-error-on-ubuntu-20-04/483/5 "2022-02-28T01:38:57Z")

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Hi, I have installed the correct versions of both libgdal-dev and boost and re-installed pygplates-py3 from Focal, however still cannot get past the same error of “Segmentation fault (core dumped)”. When I run the command that you have suggested, I get:

> > python3 -c “import pygplates; print(pygplates. **version** )”  
> > 2.2.0.28  
> > Segmentation fault (core dumped)

I have also noticed something else strange, when I import the pygmt module I get no errors. However, if I import this after importing pygplates, I get errors. This does not occur with any other module. I have included this below:

Importing pygmt by itself:

> > python3 -c “import pygmt”

Importing pygmt before pygplates:

> > python3 -c “import pygmt; import pygplates”  
> > Segmentation fault (core dumped)

importing pygmt after pygplates:

> > python3 -c “import pygplates; import pygmt”  
> > Traceback (most recent call last):  
> > File “”, line 1, in   
> > File “/home/bhavik/anaconda3/envs/kinpy\_forward/lib/python3.9/site-packages/pygmt/ **init**.py”, line 70, in   
> > \_begin()  
> > File “/home/bhavik/anaconda3/envs/kinpy\_forward/lib/python3.9/site-packages/pygmt/session\_management.py”, line 16, in begin  
> > with Session() as lib:  
> > File “/home/bhavik/anaconda3/envs/kinpy\_forward/lib/python3.9/site-packages/pygmt/clib/session.py”, line 183, in **enter**  
> > self.create(“pygmt-session”)  
> > File “/home/bhavik/anaconda3/envs/kinpy\_forward/lib/python3.9/site-packages/pygmt/clib/session.py”, line 329, in create  
> > c\_create\_session = self.get\_libgmt\_func(  
> > File “/home/bhavik/anaconda3/envs/kinpy\_forward/lib/python3.9/site-packages/pygmt/clib/session.py”, line 281, in get\_libgmt\_func  
> > self.\_libgmt = load\_libgmt()  
> > File “/home/bhavik/anaconda3/envs/kinpy\_forward/lib/python3.9/site-packages/pygmt/clib/loading.py”, line 59, in load\_libgmt  
> > raise GMTCLibNotFoundError(“\n”.join(error\_msg))  
> > pygmt.exceptions.GMTCLibNotFoundError: Error loading GMT shared library at ‘/home/bhavik/anaconda3/envs/pygmt/lib/libgmt.so’.  
> > /home/bhavik/anaconda3/envs/pygmt/lib/./libgdal.so.29: undefined symbol: opj\_encoder\_set\_extra\_options  
> > Error loading GMT shared library at ‘libgmt.so’.  
> > libgmt.so: cannot open shared object file: No such file or directory  
> > Segmentation fault (core dumped)

I do not know why importing pygplates causes errors with pygmt, as it is not a dependency. However, I have included the information in case you have seen this issue before.

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