500 Internal Server Error

I have the same issue, site gives 500 error after activating plugin.

I found the issue to be this,
Invalid command ‘bos’, perhaps misspelled or defined by a module not included in the server configuration

I am looking to see where this was set at to have a better sense of how to fix it for the developer and us

I found out how to fix this temporarily until the plugin developer fixes this.

Open your .htaccess file, and remove “bos”
For me, it was around line 7, but it could be on a different line for others.

After you remove “bos” and then re-save the file, go and disable “Wp Fastest Cache” in your plugins, and wait until the plugin developer fixes this.

Comment if you need any help or if this works for you!

It looks like the problem lies at line 674
/plugins/wp-fastest-cache/inc/admin.php @ Line 674

else{
$htaccess_rules = “bos”;
}

Thanks for the info, the developer is working on my site now.

I removed bos from htaccess and the error is gone. Can you let me know when this is fixed and I’ll try again?

Thanks for the quick fix on this. Will be waiting for a tested solution, especially since as mentioned, the 500 Error persists.

Note: Don’t forget to show your “hidden” files just in case you are using a CPanel to access your file manager.

I am so sorry. I forgot to remove the test line.

How to Fix

1. to remove the rules of WPFC from .htaccess
2. to delete /wp-content/plugins/wp-fastest-cache/
3. to download WPFC again.

How if local server wamp 500 internal error? what should we do?

Hi @yudi07, you can try to remove leverage browser caching rules from htaccess.