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  • Do you have a separate environment where you can install Joomla 4 copy of your site and test it to find the problem(s) without affecting your running or live Joomla3 instance? Commented Jul 19, 2022 at 23:51
  • May I ask which specific extensions the project had installed? @Xue Commented Jul 20, 2022 at 0:20
  • I don’t have a separate environment. But that sounds a good idea! Thank you. There are no specific extensions that I am aware of. Commented Jul 20, 2022 at 0:50