Force closes on downloading resources

[naruaika]

It is quite often I encounter that the entire application force closed when downloading any resource. I was wondering if it had something to do with handling stream buffer or something related. But I recently discovered that just didn't seem right. Still figuring out the code. By the way, here's the traceback from faulthandler:

Fatal Python error: Segmentation fault

Thread 0x00007fa048b14700 (most recent call first):
  File "/usr/lib/python3.8/ssl.py", line 1099 in read
  File "/usr/lib/python3.8/ssl.py", line 1241 in recv_into
  File "/usr/lib/python3.8/socket.py", line 669 in readinto
  File "/usr/lib/python3.8/http/client.py", line 502 in readinto
  File "/usr/lib/python3.8/http/client.py", line 458 in read
  File "/app/share/grapik-quran/src/model.py", line 238 in add_musshaf
  File "/app/share/grapik-quran/src/window.py", line 571 in add_musshaf
  File "/usr/lib/python3.8/threading.py", line 870 in run
  File "/usr/lib/python3.8/threading.py", line 932 in _bootstrap_inner
  File "/usr/lib/python3.8/threading.py", line 890 in _bootstrap

Current thread 0x00007fa04f195740 (most recent call first):
  File "/usr/lib/python3.8/site-packages/gi/overrides/Gio.py", line 42 in run
  File "/app/share/grapik-quran/src/main.py", line 47 in main
  File "/app/bin/grapik-quran", line 41 in <module>

And

free(): double free detected in tcache 2

[naruaika]

Another traceback from journalctl -r:

May 20 09:22:30 vbook abrt-notification[62358]: [🡕] Process 62240 (python3.8) crashed in ??()
May 20 09:22:30 vbook abrt-server[62306]: Can't open file 'core_backtrace' for reading: No such file or directory
May 20 09:22:30 vbook abrt-server[62306]: Error: No segments found in coredump './coredump'
May 20 09:22:30 vbook abrt-server[62306]: Lock file '.lock' was locked by process 62309, but it crashed?
May 20 09:22:30 vbook abrt-server[62306]: Unsupported container technology
May 20 09:22:30 vbook abrtd[764]: Size of '/var/spool/abrt' >= 5000 MB (MaxCrashReportsSize), deleting old directory 'ccpp-2021-05-19-23:15:17.4815>
May 20 09:22:29 vbook audit: BPF prog-id=167 op=UNLOAD
May 20 09:22:29 vbook audit: BPF prog-id=168 op=UNLOAD
May 20 09:22:29 vbook flatpak[3952]: 09:22:29.7524                           ide-run-manager[    2]:  WARNING: Process quit unexpectedly
May 20 09:22:29 vbook systemd[1589]: app-flatpak-org.grapik.Quran-62232.scope: Deactivated successfully.
May 20 09:22:29 vbook audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-coredump>
May 20 09:22:29 vbook systemd[1]: [email protected]: Deactivated successfully.
May 20 09:22:29 vbook systemd-coredump[62297]: [🡕] Process 62240 (grapik-quran) of user 1000 dumped core.
                                               
                                               Stack trace of thread 7:
                                               #0  0x00007f750e2a07f5 n/a (/usr/lib/x86_64-linux-gnu/libc-2.31.so + 0x397f5)
                                               #1  0x00007f750e2eb81c n/a (/usr/lib/x86_64-linux-gnu/libc-2.31.so + 0x8481c)
May 20 09:22:29 vbook audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-coredum>
May 20 09:22:29 vbook systemd[1]: Started Process Core Dump (PID 62296/UID 0).
May 20 09:22:29 vbook audit: BPF prog-id=168 op=LOAD
May 20 09:22:29 vbook audit: BPF prog-id=167 op=LOAD
May 20 09:22:28 vbook audit[62240]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=622>
May 20 09:21:45 vbook systemd[1589]: Started app-flatpak-org.grapik.Quran-62232.scope.