Error for compatibility setting in laravel

[bhaumik]

Website URL

http://knowledgetime.lovestoblog.com/
(please specify the URL of the site on which you are experiencing the problem)

Error Message

Fatal error : Could not check compatibility between Symfony\Component\Finder\Iterator\RecursiveDirectoryIterator::current(): Symfony\Component\Finder\SplFileInfo and FilesystemIterator::current(): SplFileInfo|FilesystemIterator|string, because class Symfony\Component\Finder\SplFileInfo is not available in /home/vol1000_8/infinityfree.com/if0_36270822/htdocs/laravel/vendor/symfony/finder/Iterator/RecursiveDirectoryIterator.php on line 54
(please share the FULL error message you see, if applicable)

Other Information

This error stop the website from running. additional research showed me a solution to change my PHP version of the project but what is the version that my hosting provider is using? and if I change the version then I have to run the command
“composer update” but I don’t think that can be done on this live server. any solution?
(other information and details relevant to your question)

[Admin]

Looking at the error message, it seems that the PHP code is simply unable to find the find a certain class in your code.

Looking at the message, there should be a PHP class SplFileInfo in the file on the following path: htdocs/laravel/vendor/symfony/finder/SplFileInfo.php

Please make sure that this file exists and that it contains the actual PHP class code (i.e. there should be a line that contains class SplFileInfo in the file). If it doesn’t, please try re-uploading the file from your computer.