Crash happened for attribute of type integer with value 0 in REST C Client code generated by OpenApiTool

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f84247cdbf0 in __GI___nanosleep (requested_time=0x7ffe3c376990, remaining=0x0)
at ../sysdeps/unix/sysv/linux/nanosleep.c:28
28 ../sysdeps/unix/sysv/linux/nanosleep.c: No such file or directory.
(gdb) c
Continuing.

Thread 3 "netopeer2-serve" received signal SIGABRT, Aborted.
[Switching to Thread 0x7f841c3a5700 (LWP 29368)]
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x00007f841e347535 in __GI_abort () at abort.c:79
#2 0x00007f841e39e508 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7f841e4a928d "%s\n")
at ../sysdeps/posix/libc_fatal.c:181
#3 0x00007f841e3a4c1a in malloc_printerr (str=str@entry=0x7f841e4aabf8 "munmap_chunk(): invalid pointer")
at malloc.c:5341
#4 0x00007f841e3a5184 in munmap_chunk (p=) at malloc.c:2830
#5 0x00007f841ec481ba in OpenconfigInterfacesAPI_deleteOpenconfigInterfacesInterfacesInterfaceSubinterfacesSubinterface (apiClient=0x7f8400001c60, name=0x7f840c000b20 "Ethernet120", index=0)
at /home/arpit/sonic/rest_base_6_2_0/rest_client_c/api/OpenconfigInterfacesAPI.c:18858
#6 0x00007f841ed477c0 in restc_delete_openconfig_interfaces_interface_subinterfaces_subinterface (
name=0x7f840c000b20 "Ethernet120", index=0)
at /home/arpit/sonic/rest_base_6_2_0/rest_client_c/api/OpenconfigInterfacesWrapperAPI.c:326
#7 0x000055a840c1d552 in np2srv_openconfig_interfaces_interfaces_interface_subinterfaces_subinterface_cb (
session=0x7f8400005b50, UNUSED_sub_id=29, UNUSED_module_name=0x55a8427b8a90 "openconfig-interfaces",
xpath=0x55a8427b7a40 "/openconfig-interfaces:interfaces/interface/subinterfaces/subinterface",
UNUSED_event=SR_EV_DONE, UNUSED_request_id=3, UNUSED_private_data=0x0)
at /home/arpit/sonic/update_netconf_server/netopeer2/src/netconf_openconfig_interfaces.c:277
#8 0x00007f841f68820a in sr_shmsub_change_listen_process_module_events (change_subs=0x55a8427fa170,
conn=0x55a842424cc0) at /home/arpit/sonic/update_netconf_server/sysrepo/src/shm_sub.c:3069
#9 0x00007f841f6430c3 in sr_subscription_process_events (subscription=0x55a842433290, session=0x0,
wake_up_in=0x7f841c3a4ad0) at /home/arpit/sonic/update_netconf_server/sysrepo/src/sysrepo.c:4286
#10 0x00007f841f68bb24 in sr_shmsub_listen_thread (arg=0x55a842433290)
at /home/arpit/sonic/update_netconf_server/sysrepo/src/shm_sub.c:4512
#11 0x00007f84247c3fa3 in start_thread (arg=) at pthread_create.c:486

Start with OpenconfigInterfacesAPI.c at OpenconfigInterfacesAPI_deleteOpenconfigInterfacesInterfacesInterfaceSubinterfacesSubinterface, then inspect the wrapper in OpenconfigInterfacesWrapperAPI.c and the callback in netconf_openconfig_interfaces.c. Reproduce the delete operation with index=0 and determine what causes the invalid-pointer abort; done means the generated REST C client completes this operation without crashing.