OPATCHAUTO-72083: Performing bootstrap operations failed OPATCHAUTO-72146: Failed to load patch

Problem:
While patching 19.3 GRID_HOME with July2019 RU patch 19.4 I got this error:

[root@fzppon06vs1n bin]#  export PATCH_LOCATION=/u01/oracle/RU_PATCHES/29708769
[root@fzppon06vs1n bin]# $GRID_HOME/OPatch/opatchauto apply $PATCH_LOCATION -oh $GRID_HOME

OPatchauto session is initiated at Mon Sep  9 11:00:57 2019
OPATCHAUTO-72083: Performing bootstrap operations failed.
OPATCHAUTO-72083: The bootstrap execution failed because OPATCHAUTO-72146: Failed to load patch
OPATCHAUTO-72146: Failed while collecting patch information for patch /u01/oracle/RU_PATCHES/29708769.
OPATCHAUTO-72146: Check the log for more information..
OPATCHAUTO-72083: Fix the reported problem and re-run opatchauto.

OPatchauto session completed at Mon Sep  9 11:01:02 2019
Time taken to complete the session 0 minute, 5 seconds

opatchauto bootstrapping failed with error code 255.

Solution:

The problem was with the RU patch binaries, looks the files were not copied properly, extracting the binaries properly from the zip file has fixed the problem!

# unzip -d /u01/oracle/RU_PATCHES  p29708769_190000_Linux-x86-64.zip

Initially, I copied the "extracted" RU binary files from another node, seems they were incomplete.