Error 503 backend

[kendywor]

i keep getting this error once in a while , can someone please explain it to me

 

[Dead-i]

Hi kendywor,

This is a generic error message that is shown when no response is received from the web server in 30 seconds. This can happen if your PHP script fails to return any data in this time, or the web server is temporarily having some difficulties and is unable to serve your request.

Thank you,

 

[kendywor]

Hi kendywor,

This is a generic error message that is shown when no response is received from the web server in 30 seconds. This can happen if your PHP script fails to return any data in this time, or the web server is temporarily having some difficulties and is unable to serve your request.

Thank you,

i tried both joomla and wordpress but i still get this error

 

[Dead-i]

Hi,

Please could I have a link to the page that is giving this error message?

Thank you,

 

[kendywor]

i get it once in a while but heres my blog http://denisotugo.science .
when i get it , it stay for 10seconds and then goes