[Magisk] AndroMani:
Thanks for your reply and here is the contents of the log file after the SafetyNet failed (that is, after uninstalling the universal safetynet fix zip file I flashed before)

P.S. I do not see the attach button in my xda editor, so could not send the Magisk log as attachment. I have pasted the contents from it here.

--------- beginning of main

05-26 02:10:12.238 241 241 I Magisk : Magisk v14.0(1400) daemon started

05-26 02:10:12.241 241 243 I Magisk : ** post-fs mode running

--------- beginning of system

05-26 07:40:12.610 241 263 I Magisk : ** post-fs-data mode running

05-26 07:40:12.613 241 263 I Magisk : * Mounting mirrors

05-26 07:40:12.614 241 263 I Magisk : mount: /dev/block/platform/msm_sdcc.1/by-name/system -> /dev/magisk/mirror/system

05-26 07:40:12.614 241 263 I Magisk : link: /dev/magisk/mirror/system/vendor -> /dev/magisk/mirror/vendor

05-26 07:40:12.615 241 263 I Magisk : bind_mount: /dev/magisk/mirror/bin

05-26 07:40:12.655 241 263 I Magisk : * Mounting /data/magisk.img

05-26 07:40:12.827 241 263 I Magisk : Resize /data/magisk.img to 64M

05-26 07:40:12.934 241 263 I Magisk : * Running post-fs-data.d scripts

05-26 07:40:12.934 241 263 I Magisk : post-fs-data.d: exec [Wireless Display]

05-26 07:40:13.586 241 263 I Magisk : * Running module post-fs-data scripts

05-26 07:40:13.586 241 263 I Magisk : xposed_23: exec [post-fs-data.sh]

05-26 07:40:13.616 241 263 I Magisk : * Loading modules

05-26 07:40:13.617 241 263 I Magisk : xposed_23: constructing magic mount structure

05-26 07:40:13.623 241 263 I Magisk : bind_mount: /system/framework

05-26 07:40:13.623 241 263 I Magisk : bind_mount: /system/framework/XposedBridge.jar

05-26 07:40:13.623 241 263 I Magisk : bind_mount: /system/framework/am.jar

05-26 07:40:13.623 241 263 I Magisk : bind_mount: /system/framework/android.test.runner.jar

05-26 07:40:13.623 241 263 I Magisk : bind_mount: /system/framework/appops.jar

05-26 07:40:13.624 241 263 I Magisk : bind_mount: /system/framework/apache-xml.jar

05-26 07:40:13.624 241 263 I Magisk : bind_mount: /system/framework/appwidget.jar

05-26 07:40:13.624 241 263 I Magisk : bind_mount: /system/framework/bmgr.jar

05-26 07:40:13.624 241 263 I Magisk : bind_mount: /system/framework/arm

05-26 07:40:13.624 241 263 I Magisk : bind_mount: /system/framework/bu.jar

05-26 07:40:13.624 241 263 I Magisk : bind_mount: /system/framework/bouncycastle.jar

05-26 07:40:13.624 241 263 I Magisk : bind_mount: /system/framework/dpm.jar

05-26 07:40:13.625 241 263 I Magisk : bind_mount: /system/framework/cneapiclient.jar

05-26 07:40:13.625 241 263 I Magisk : bind_mount: /system/framework/com.android.future.usb.accessory.jar

05-26 07:40:13.625 241 263 I Magisk : bind_mount:

05-26 07:40:13.683 241 263 I Magisk : bind_mount: /system/lib/modules

05-26 07:40:13.683 241 263 I Magisk : bind_mount: /system/lib/soundfx

05-26 07:40:13.683 241 263 I Magisk : bind_mount: /system/lib/libprotobuf-cpp-lite.so

05-26 07:40:13.684 241 263 I Magisk : bind_mount: /system/lib/libradioservice.so

05-26 07:40:13.684 241 263 I Magisk : bind_mount: /system/lib/libresourcemanagerservice.so

05-26 07:40:13.684 241 263 I Magisk : bind_mount: /system/lib/libserviceutility.so

05-26 07:40:13.684 241 263 I Magisk : bind_mount: /system/lib/libsoftkeymasterdevice.so

05-26 07:40:13.684 241 263 I Magisk : bind_mount: /system/lib/libsonic.so

05-26 07:40:13.684 241 263 I Magisk : bind_mount: /system/lib/libstagefright_soft_avcdec.so

05-26 07:40:13.685 241 263 I Magisk : bind_mount: /system/lib/libstagefright_soft_avcenc.so

05-26 07:40:13.685 241 263 I Magisk : bind_mount: /system/lib/libstagefright_soft_mpeg2dec.so

05-26 07:40:13.685 241 263 I Magisk : bind_mount: /system/bin/patchoat

05-26 07:40:13.685 241 263 I Magisk : bind_mount: /system/bin/oatdump

05-26 07:40:13.685 241 263 I Magisk : bind_mount: /system/bin/dex2oat

05-26 07:40:13.685 241 263 I Magisk : bind_mount: /system/bin/app_process32

12-17 18:25:35.372 241 688 I Magisk : ** late_start service mode running

12-17 18:25:35.372 241 688 I Magisk : * Running service.d scripts

12-17 18:25:35.372 241 688 I Magisk : * Running module service scripts

Hope this helps in figuring out what could be causing the SN check failure.