error 500 from external tools

[arabeevideo]

hello
while using many tools from external websites such as keywords analyze, back links checker.. I am having on the tool's websites "500 : internal error server",do you have an idea please?
this is my website url :
arabeevideo.com
[arabeevideo.com ]

[jdMorgan]

Look at your server error log file to determine the cause of the problem. It will often tell you exactly what the problem is. Without that information, everyone is just guessing at the problem, and it will be impossible to diagnose the problem that way. :(

Jim