Php artisan ninja:check-data

I am not really sure how much I should worry about it.

The command /usr/bin/php /var/www/ninja/artisan ninja:check-data returns:
2021-04-26 05:05:14 2021-04-26 05:05:14 Running CheckData…
2021-04-26 05:05:15 0 clients with incorrect balances
2021-04-26 05:05:15 0 clients with incorrect invoice balances
2021-04-26 05:05:15 0 clients with incorrect paid to dates
2021-04-26 05:05:16 0 clients with incorrect client balances
2021-04-26 05:05:16 0 contacts without a contact_key
2021-04-26 05:05:16 0 clients without any contacts
2021-04-26 05:05:16 0 clients without a single primary contact
2021-04-26 05:05:16 3 activities records with incorrect client company id
2021-04-26 05:05:16 3 invoices records with incorrect client company id
2021-04-26 05:05:16 0 users with duplicate oauth ids
2021-04-26 05:05:16 Done: FAILURE

How critical is that? And what is that? (How to solve too).

Thank you.

@david, how do you suggest to debug this?

I have experienced this error from version 5.1.43 to 5.1.53, using PHP7.4 and PHP8.0.

I hope this extra information helps.

Thank you.