I hope you are doing.
I tried to run the script (migrate2rocky.sh) on my OS (CentOS Linux release 7.7.1908), however, I faced some warnings and error as below:

./migrate2rocky.sh: line 133: warning: setlocale: LC_ALL: cannot change locale (C.UTF-8): No such file or directory
./migrate2rocky.sh: line 133: warning: setlocale: LC_ALL: cannot change locale (C.UTF-8)
Failed to set locale, defaulting to C
Error: Check discovered 1 problem(s)
kmod-kvdo-6.1.2.41-5.el7.x86_64 has installed conflict "kmod-kvdo": kmod-kvdo-6.1.2.41-5.el7.x86_64

Errors found in dnf/rpm database.  Please correct before running migrate2rocky.

An error occurred while we were attempting to convert your system to Rocky Linux. Your system may be unstable. Script will now exit to prevent possible damage.

 A log of this installation can be found at /var/log/migrate2rocky.log
[taghizade@SRV-PishBini005 migrate2rocky]$ vi /var/log/migrate2rocky.log
[taghizade@SRV-PishBini005 migrate2rocky]$ dnf check
kmod-kvdo-6.1.2.41-5.el7.x86_64 has installed conflict "kmod-kvdo": kmod-kvdo-6.1.2.41-5.el7.x86_64
Error: Check discovered 1 problem(s)

I'll be thankful if I could have your opinion.

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Sincerely,
Ehsan Taghizadeh
Ph.D. of Meteorology
Institute of Geophysics, University of Tehran, Iran
I.R. of Iran Meteorological Organization (IRIMO)