Thank you for sending me the logs and for confirming the Environment checks.
I have taken a look at the logs and cannot see any errors relating to the swf file. Can you confirm that you did try to upload the swf file again, after you enabled debugging? If you could try to upload the file again with debugging enabled, but perhaps take note of the time that you did this, it will help to narrow down where the issue is.
Can you confirm whether you are having trouble uploading any other files to your library? If so, please let me know. can you also confirm if you have been able to upload any other swf files successfully?
The error “Image requires a minimum width”, is a PHP upload error. This suggests that the issue may be with your PHP configuration. I would recommend double checking your PHP configuration, to make sure all of the settings and parameters are correct.
I’m sorry to hear that you have had issues installing the 1.8.10 CMS. Just as a consideration, I would recommend a Docker installation. You may find the installation process is a little simpler. I’ve included a link to the installation page in case you would consider trying it: