Error in inc/plugins/google_seo/redirect.php

[dandv]

For the first time in ~4 years, I just got this email notification from my MyBB instance, I assume as a result of a penetration attempt:

Your copy of MyBB running on ... has experienced an error. Details of the error include:

---
Type: 2
File: inc/plugins/google_seo/redirect.php (Line no. 367)
Message
urlencode() expects parameter 1 to be string, array given

The instance was using Google SEO 1.6.5, admittedly old.

[frostschutz]

Array style queries (?x[0]=foo&x[1]=bar&x[2]=baz) aren't supported by redirect.

Usually this is not a problem since MyBB does not use it. And usually, this warning is silently ignored... ;)

[dandv]

Since upgrading to 1.8, I've been getting these warning a lot, tens per day.

Type: 2
File: inc/plugins/google_seo/redirect.php (Line no. 385)
Message
urlencode() expects parameter 1 to be string, array given