gtburst plotting issue

[nmirabal]

There seems to be an issue with matplotlib and/or tk when running the likelihood analysis in gtburst. It is supposed to plot the events in the GUI but it fails/crashed at that point. Included is a snipped of the .log file (below). We have tried falling back on older matplotlib/tk versions but it does not seem to fix it. For now the advice for users is to try the Fermibottle docker container which appears to be stable.

---

WARNING: FITSFixedWarning: 'datfix' made the change 'Set MJD-OBS to 59757.889584 from DATE-OBS.
Set MJD-END to 59757.890742 from DATE-END'. [astropy.wcs.wcs]
ESC[33mWARNINGESC[0m: FITSFixedWarning: 'datfix' made the change 'Set MJD-OBS to 59757.889584 from DATE-OBS.
Set MJD-END to 59757.890742 from DATE-END'.
/home/lonewolf/miniforge3/envs/fermipy/lib/python3.9/site-packages/fermitools/GtBurst/aplpy/my_aplpy.py:948: UserWarning: You passed a edgecolor/edgecolors ('cyan') for an unfilled marker ('x'). Matplotlib is ignoring the edgecolor in favor of the facecolor. This behavior may change in the future.
s = self._ax1.scatter(xp, yp, **kwargs)
['/home/lonewolf/miniforge3/envs/fermipy/bin/gtburst', '/home/lonewolf/miniforge3/envs/fermipy/lib/python3.9/site-packages/fermitools/gtburst.py', '/home/lonewolf/miniforge3/envs/fermipy/lib/python3.9/site-packages/fermitools/gtburst.py', '/home/lonewolf/miniforge3/envs/fermipy/lib/python3.9/site-packages/fermitools/gtburst.py', '/home/lonewolf/miniforge3/envs/fermipy/lib/python3.9/tkinter/init.py', '/home/lonewolf/miniforge3/envs/fermipy/lib/python3.9/tkinter/init.py', '/home/lonewolf/miniforge3/envs/fermipy/lib/python3.9/site-packages/fermitools/GtBurst/CommandPipeline.py']
Exception in Tkinter callback
Traceback (most recent call last):