Export to Office Crosser - PLAYCANVAS
Now, with the custom polyfill script from @yaustar, it works on versions after 62. And to run and check on earlier ones as well, I export the zip archive and upload it to my own host.
Accordingly, now, as a temporary solution, I am using the version of the engine in which I have removed the ‘import’ keywords as I was also advised above.
If we go back to where it started:
If the version is below 63 - the boot screen did not appear and an import error appeared, if from 63 to 73 - there were no errors, but the boot screen hangs at 0%