PHP Parse error: syntax error, unexpected '[' in payeezyjs.php

[spbw]

spbwshop.co.uk
V1.5.5e

I upgraded from 1.5.1 recently and, after some trials & tribulations, now have the shop fully working. We did get sales through PayPal but when I went on to the Admin to check our API details today I found that the modules no longer show. As per attached. Yet it appears to be still working.

Are they hidden? Or somewhere else?

Thanks

[Design75]

You have a partial white page. Please check your logs folder for any debug files, and paste the content here. (minus sensitive data like admin folder name).

[spbw]

Thanks,
If this is the Cpanel error log then it is only showing a 404 with the sitemap.

[Design75]

No, there is a logs folder in the root of your zen cart installation.

[spbw]

It is a huge file - attached

[Design75]

that is the acces log, generated by your server. Your debug file looks like this myDEBUG-adm-1504872109-96821.log