Here are some steps below to help you send money to a bitcoin address following the blockchain.com sendning procedure (most recommended if you have a blockchain account, then it would be much easier for you to understand as i list them.
1. Click on Send and select Bitcoin from the “Currency drop-down menu”.
2. If you have multiple sub-wallets, you can choose the sub-wallet you want to send from in the “From drop-down menu”.
3. In the “To field”, paste the recipient’s address OR scan the recipient’s QR code.
4. Enter the amount you want to send.
5. Add an optional description for your transaction. (that’s if you want).
6. From the “Transaction Fee drop-down menu”, choose either a Regular or Priority fee. Regular fees are lower, but transactions can take over an hour to confirm. Priority fees cost more but are calculated to ensure transactions confirm within an hour. For an in-depth look at how their fee recommendations work, check out their web site’s blog.
7. Once you’re ready to send, click “Continue” to review the details of your transaction.
8. Once you have verified your transaction details, click Send Bitcoin to send the funds. (If you need to modify your transaction details, like the recipient’s address or the amount, you can select “Go Back” to return to the previous step.
9. To monitor any incoming and outgoing bitcoin transactions, visit your “Bitcoin tab” in the left navigation of your wallet.
I hope this helps..

The 500 Internal Server Error is a very general HTTP status code that means something has gone wrong on the web site’s server but the server could not be more specific on what the exact problem is.
Resolution Possibilities:
The 500 Internal Server Error is a “server-side” error, meaning the problem is not with your PC or Internet connection but instead is a problem with the web site’s server.
Even though the issue is not yours to troubleshoot or resolve, there are a few things you can do:
1. Retry the web page by clicking the refresh/reload button or trying the URL from the address bar again. Even though the 500 Internal Server Error is reporting a general error on the web site’s servers and not your computer, the server error may only be temporary. Trying the page again will often be successful.
2. Come back later. The 500 Internal Server Error message is one of the most common error message seen when checking out during an online purchase so sales are often disrupted. This is usually a great incentive to resolve the issue very quickly.
3. Try Clearing your cache and browser history. It could be possible that the page you are seeing is a cached version, so after the cache is cleared it will go away.
4. You can check the error log button in cPanel under the logs section to see what errors are being given if you have cPanel hosting with us. Sometimes 500 errors can be due to syntax errors in a .htaccess file or other things you may be able to quickly fix yourself.