Exact Phrases Issue

Good Morning,

I started getting a weird error, but I’m not sure if it’s related to your plugin or an incompatibility with another plugin:

PHP Fatal error:  Uncaught TypeError: Argument 1 passed to relevanssi_extract_phrases() must be of the type string, null given, called in /nas/content/live/###/wp-content/plugins/relevanssi/lib/common.php on line 532 and defined in /nas/content/live/###/wp-content/plugins/relevanssi/lib/phrases.php:21
Stack trace:
#0 /nas/content/live/###/wp-content/plugins/relevanssi/lib/common.php(532): relevanssi_extract_phrases(NULL)
#1 /nas/content/live/###/wp-content/plugins/relevanssi/lib/indexing.php(1281): relevanssi_tokenize(NULL, true, 2)
#2 /nas/content/live/###/wp-content/plugins/relevanssi/lib/indexing.php(547): relevanssi_index_custom_fields(Array, 9189, Array, '2', false)
#3 /nas/content/live/###/wp-content/plugins/relevanssi/lib/indexing.php(342): relevanssi_index_doc('9189', false, 'visible', true)
#4 /nas/content/live/###/wp-content/plugins/relevanssi/lib/admin-ajax.php(62): relevanssi_build_index(true, false, 20, true)
#5 /nas/content/live/### in /nas/content/live/###/wp-content/plugins/relevanssi/lib/phrases.php on line 21, referer: https://###/wp-admin/options-general.php?page=relevanssi%2Frelevanssi.php&tab=indexing

I was able to resolve the issue by adding the following code to the top of the relevansii_token function:

$string = (is_null($string)) ? '' : $string;

I don’t need an answer on this one, but I use your plugin a lot and wanted to make sure you were aware of this issue, just in case.

Thank you,
@rnoakes3rd