I have just started to use the scheduler so this could be my error but I'm not sure what's wrong or how to fix it.

The last four times I have been imaging I have used the scheduler so that I can actually get some sleep. Each time I have gotten the same error that ends the imaging session. This happens even though the session isn't complete (last night it was on image 88 of 120) Below are the last several lines from the log file.

If it matters, I am using an HEQ5 (EQMOD driver), ASI178mm imaging camera, and SSAG autoguider. I'm running Astroberry on a 4GB Rpi4 and accessing it via VNC (faster response)

[2020-06-01T01:01:07.550 EDT DEBG ][ org.kde.kstars.indi] - QHY CCD QHY5-M- : "[DEBUG] Taking a 2.00000 seconds frame... "
[2020-06-01T01:01:08.167 EDT DEBG ][ org.kde.kstars.indi] - EQMod Mount : "[SCOPE] Compute local time: lst=16.16012715 (16:09:36.46) - julian date=2459001.70910437 "
[2020-06-01T01:01:08.169 EDT DEBG ][ org.kde.kstars.indi] - EQMod Mount : "[COMM] dispatch_command: \":j1\", 0 bytes written "
[2020-06-01T01:01:08.182 EDT DEBG ][ org.kde.kstars.indi] - EQMod Mount : "[COMM] read_eqmod: \"=C58B9B\", 8 bytes read "
[2020-06-01T01:01:08.183 EDT DEBG ][ org.kde.kstars.indi] - EQMod Mount : "[SCOPE] GetRAEncoder() = 10193861 "
[2020-06-01T01:01:08.183 EDT DEBG ][ org.kde.kstars.indi] - EQMod Mount : "[COMM] dispatch_command: \":j2\", 0 bytes written "
[2020-06-01T01:01:08.198 EDT DEBG ][ org.kde.kstars.indi] - EQMod Mount : "[COMM] read_eqmod: \"=3BCF8F\", 8 bytes read "
[2020-06-01T01:01:08.199 EDT DEBG ][ org.kde.kstars.indi] - EQMod Mount : "[SCOPE] Current encoders RA=10193861 DE=9424699 "
[2020-06-01T01:01:08.212 EDT DEBG ][ org.kde.kstars.indi] - EQMod Mount : "[COMM] dispatch_command: \":f1\", 0 bytes written "
[2020-06-01T01:01:08.213 EDT DEBG ][ org.kde.kstars.indi] - EQMod Mount : "[COMM] read_eqmod: \"=111\", 5 bytes read "
[2020-06-01T01:01:08.215 EDT DEBG ][ org.kde.kstars.indi] - EQMod Mount : "[COMM] dispatch_command: \":f2\", 0 bytes written "
[2020-06-01T01:01:08.224 EDT DEBG ][ org.kde.kstars.indi] - EQMod Mount : "[COMM] read_eqmod: \"=101\", 5 bytes read "
[2020-06-01T01:01:08.509 EDT INFO ][ org.kde.kstars.indi] - ZWO CCD ASI178MM : "[INFO] Exposure done, downloading image... "
[2020-06-01T01:01:08.512 EDT INFO ][ org.kde.kstars.indi] - ZWO CCD ASI178MM : "[INFO] Download complete. "
[2020-06-01T01:01:08.561 EDT DEBG ][ org.kde.kstars.indi] - ZWO CCD ASI178MM : "[DEBUG] Uploading file. Ext: fits, Size: 12885120, sendImage? Yes, saveImage? No "
[2020-06-01T01:01:08.735 EDT DEBG ][ org.kde.kstars.indi] - ZWO CCD ASI178MM : "[DEBUG] BLOB transfer took 0.131496 seconds "
[2020-06-01T01:01:08.736 EDT DEBG ][ org.kde.kstars.indi] - ZWO CCD ASI178MM : "[DEBUG] Upload complete "
[2020-06-01T01:01:08.899 EDT DEBG ][ org.kde.kstars.indi] - processBLOB() mode 0
[2020-06-01T01:01:08.904 EDT INFO ][ org.kde.kstars.indi] - "FITS" file saved to "/home/astroberry/AstroPhotos/M_92/Light/M_92_Light_30_secs_088.fits"
[2020-06-01T01:01:09.399 EDT INFO ][ org.kde.kstars.ekos.capture] - "Download Time: 0.66 s, New Download Time Estimate: 0.69 s."
[2020-06-01T01:01:09.409 EDT INFO ][ org.kde.kstars.fits] - Loading FITS file "/home/astroberry/AstroPhotos/M_92/Light/M_92_Light_30_secs_088.fits"
[2020-06-01T01:01:09.422 EDT INFO ][ org.kde.kstars.ekos.capture] - "Received image 88 out of 120."
[2020-06-01T06:02:57.904 EDT WARN ][ qt.qpa.xcb] - xcb_shm_create_segment() failed for size 175808
[2020-06-01T06:02:57.979 EDT WARN ][ default] - The X11 connection broke (error 1). Did the X11 server die?
[2020-06-01T06:02:58.735 EDT WARN ][ default] - QObject::connect: No such signal QObject::aboutToClose()

It is an X11 error. It looks like out of memory trying to create an object. Perhaps you should try it using a client rather than the VNC viewer. It may make a difference.