DEV: servers crash

[st3107]

Update the servers so that they can run in the lastest environment.

[codecov-commenter]

Codecov Report

Merging #283 into master will decrease coverage by 48.89%.
The diff coverage is 57.60%.

@@             Coverage Diff             @@
##           master     #283       +/-   ##
===========================================
- Coverage   65.64%   16.74%   -48.90%     
===========================================
  Files          58       64        +6     
  Lines        4200     4300      +100     
===========================================
- Hits         2757      720     -2037     
- Misses       1443     3580     +2137     

Impacted Files	Coverage Δ
xpdan/glbl.py	100.00% <ø> (ø)
xpdan/mayavi_callbacks.py	0.00% <0.00%> (-5.27%)	⬇️
xpdan/pipelines/pipeline_utils.py	36.84% <ø> (-14.04%)	⬇️
xpdan/pipelines/tomo.py	0.00% <0.00%> (-94.74%)	⬇️
xpdan/startup/viz_server.py	0.00% <0.00%> (-51.17%)	⬇️
xpdan/tests/test_data_reduction.py	27.27% <ø> (-72.73%)	⬇️
xpdan/tests/test_pipeline_utils.py	50.00% <ø> (-50.00%)	⬇️
xpdan/vend/callbacks/best_effort.py	0.00% <0.00%> (-12.92%)	⬇️
xpdan/vend/callbacks/broker.py	0.00% <0.00%> (-24.14%)	⬇️
xpdan/vend/callbacks/fitting.py	13.01% <0.00%> (-34.61%)	⬇️
... and 89 more

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