Unable to open file for reading

Same problem here.
Identical WP & PHP cersions.
Already tried uninstall & reinstall of the plugin
Already tried V 6.64 of the plugin.

See if this topic can help you.

I have the same issue!

I have the same problem please help me

guys, I found the solution use that version of all in one migration plugin https://pluginarchive.com/wordpress/all-in-one-wp-migration/v/5-56 and then goto to cpanel>>websitename>>wp-content>>ai1wm-backups and paste the import file.
Now go to your website dashboard. Click on all in one migration>>Backups and then you already have one backup. Now use the second circle which is restored and wait for restore then click ok and last it will import to your website.
Note:
Must remember your old username and password because after importing it ask for that username and password which you are using on that website.
Thanks,
Uzair Irfan
https://www.Todayztech.com