BUG: APIC Database Size check fails unless /debug is listed

[mari9825]

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Describe the bug
On APIC version 5.2(2e) (15.2(2e)), the APIC Database Size validation fails because the script cannot read the mitmocounters/mo files for eventmgr, policydist, policymgr, and vmmmgr.

The counter files can be accessed only after running "ls /debug" first. Without this preliminary command, the script receives No such file or directory for paths.
This behavior prevents the validation from collecting APIC database object counters.

Script output

[Check 102/103] APIC Database Size... Unable to collect APIC database object counters ERROR !!

APIC ID  DME         Collection Error
-------  ---         ----------------
1        eventmgr    Counter file is unavailable after 3 attempts: cat: /debug/<APIC-1>/eventmgr/mitmocounters/mo: No such file or directory
1        policydist  Counter file is unavailable after 3 attempts: cat: /debug/<APIC-1>/policydist/mitmocounters/mo: No such file or directory
1        policymgr   Counter file is unavailable after 3 attempts: cat: /debug/<APIC-1>/policymgr/mitmocounters/mo: No such file or directory
1        vmmmgr      Counter file is unavailable after 3 attempts: cat: /debug/<APIC-1>/vmmmgr/mitmocounters/mo: No such file or directory

(reproduced on all five APICs and for all four DMEs)

To Reproduce
Steps to reproduce the behavior such as:

1. Use an APIC cluster running version 5.2(2e) (15.2(2e)).
2. Run ACI Pre-Upgrade Validation Script v4.3.0.
3. Run the APIC Database Size validation without first running ls /debug.
4. Observe that collection of /debug/<APIC-hostname>/<DME>/mitmocounters/mo fails with No such file or directory.
5. Run ls /debug.
6. Retry access to the same counter-file paths and observe that they become accessible.

Expected behavior
The APIC Database Size validation should collect the required mitmocounters/mo files without requiring a manual ls /debug command beforehand.

Additional context
Add any other context about the problem here.