When I click on checkout i get this error
1054 Unknown column 'customers_id' in 'where clause'
in:
[select amount from sc_customer where customers_id = 80]

I don't know what has happened. I also get an error when I try to go to the email welcome from the admin screen. That error is:

Parse error: syntax error, unexpected T_VARIABLE, expecting ',' or ';' in /home/content/s/i/m/simetra/html/admin/email_welcome.php on line 164

Someone please help. My site is www.simetraonline.com