PHP Warnings in Newsletter Preview
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In the preview of one of my newsletters I have the following error messages:
Warning: array_merge() [function.array-merge]: Argument #1 is not an array in /var/www/mydomain/wp-content/plugins/wysija-newsletters/helpers/wj_engine.php on line 983 Warning: array_unique() expects parameter 1 to be array, null given in /var/www/mydomain/wp-content/plugins/wysija-newsletters/helpers/wj_engine.php on line 983
If I send a test mail it seems to work, but I’m a little worried about these php warnings. What does they mean? And how to get rid of?
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