Ok, after extensive research I did the following:
- I ran:
php artisan migrate(within the root folder of my InvoiceNinja installation) - Deleted these files:
2021_10_29_115919_update_designs.php, 2021_11_03_131308_onboarding.php(all versions if multiple exists they are mentioned in the Terminal after you run php artisan migrate), - Visited: https://invoice.mydomain.nl/update?secret=XXXXX (XXXXX can be found in your .env file)
- Again, I ran
php artisan migrate. - I ran
php artisan optimize.
Hopefully the problem will be solved now in the long run…Perhaps these steps can help others.