Crash during create graph

[PeterBWu]

Crashed when calculating graph with provided FG33E1 .sql info

link_recover_XE2_NP6_0_VS_link_recover_XE0_NP6_0_FG33E1_All
['serial_number', 'test_date', 'test_type', 'ref_line_number', 'link_recover_XE2_NP6_0_reading', 'link_recover_XE0_NP6_0_reading']
The Data Collection Will Start Soon!
Graph Starting!
Engine(postgres://postgres:***@localhost/FG33E1)
Traceback (most recent call last):
  File "SearchEngine.py", line 2220, in run
    self.fig1.plot_scatter(self.table_name,self.sensor_x,self.sensor_y,self.model)
  File "C:\Users\peterwu\01-Sorted\GitHub\SearchEngine\graph.py", line 246, in plot_scatter
    plt.show()
  File "C:\Users\peterwu\AppData\Local\Continuum\anaconda3\envs\SearchEngine\lib\site-packages\matplotlib\pyplot.py", line 269, in show
    return _show(*args, **kw)
  File "C:\Users\peterwu\AppData\Local\Continuum\anaconda3\envs\SearchEngine\lib\site-packages\matplotlib\cbook\deprecation.py", line 413, in wrapper
    return func(*args, **kwargs)
  File "C:\Users\peterwu\AppData\Local\Continuum\anaconda3\envs\SearchEngine\lib\site-packages\matplotlib\backend_bases.py", line 3302, in show
    cls.mainloop()
  File "C:\Users\peterwu\AppData\Local\Continuum\anaconda3\envs\SearchEngine\lib\site-packages\matplotlib\backends\backend_qt5.py", line 1094, in mainloop
    signal.signal(signal.SIGINT, signal.SIG_DFL)
  File "C:\Users\peterwu\AppData\Local\Continuum\anaconda3\envs\SearchEngine\lib\signal.py", line 47, in signal
    handler = _signal.signal(_enum_to_int(signalnum), _enum_to_int(handler))
ValueError: signal only works in main thread

[PeterBWu]

FG33E1.zip

[PeterBWu]

Crashes regardless of what sensors I pick