[Bug] error when adding decorators to g.gui.animation

[veroandreo]

When trying to add decorators like time stamps or text to an animation, I get:

To Reproduce

1. Create an animation
2. Go to export
3. Add time stamps and hit Export
4. See error

System description:

GRASS version: 7.8.3                                                            
Code revision: exported                                                         
Build date: 2020-06-26                                                          
Build platform: x86_64-redhat-linux-gnu                                         
GDAL: 3.0.4                                                                     
PROJ: 6.3.2                                                                     
GEOS: 3.8.1                                                                     
SQLite: 3.32.3                                                                  
Python: 3.8.3                                                                   
wxPython: 4.0.7                                                                 
Platform: Linux-5.7.8-200.fc32.x86_64-x86_64-with-glibc2.2.5   

I will be teaching different GRASS tools starting on August 3rd and for 3 weeks, and it's a pity that so many GUI tools are broken in the stable version.

[petrasovaa]

You didn't actually select the method, so although this is still a bug, it is at least easy to avoid it.

[veroandreo]

@petrasovaa Right! That was my bad... sorry for the noise

However, when I try to export to gif, ie. first select gif, browse for directories and set a name with extension (bla.gif), I get the error reported in #827

I close this one as it is invalid

[petrasovaa]

Not quite invalid, anyway, should be solved by #838.