Undefined Variable and Undefined Index Errors

After the latest update I started getting a string of both errors and error messages.

I have debugging turned off – set to false.

But I keep getting Undefined index or undefined variable and it seems to happen almost randomly. If I disable one plugin, then another error pops up for a different plugin. Disabling and then re-enabling does not help. I don’t understand how this happened or what it means. I’m about to just kill the entire install – which will hurt, but I’m sick of the errors.

Notice: Undefined index: query in /**/**/public_html/wp-content/plugins/simple-mobile-url-redirect/mobile-redirect.php on line 134

Notice: Undefined variable: english_flag_choice in /**/**/public_html/wp-content/plugins/google-language-translator/google-language-translator.php on line 372

Notice: Undefined variable: english_flag_choice in /**/**/public_html/wp-content/plugins/google-language-translator/google-language-translator.php on line 375

Notice: Undefined variable: lang_attribute in /**/**/public_html/wp-content/plugins/google-language-translator/google-language-translator.php on line 385