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how did you resolve this?

This problem has been a truly persistent one for me that I have not been able to solve as well, despite having a fair bit of development experience.

For me… I log in for the first time in a new session and the error appears. I try to log once more and WordPress logs me in with no error. If you do a general search for this error message on both Google and WordPress and you get page upon page of threads regarding this topic. All of which have different recommendations.

If there is anyone who is a core developer at WordPress or knowledgeable support staff who can shed any light on this I would truly be appreciative. Thanks in advance!

Well shortly after posting my message above I ran across a thread on Stack Exchange with a solution that worked… at least for me it did. Here is the link to the thread.

I used the second solution posted by Raj on June 3, 2015.

Basically, it involves adding a bit of code to your theme’s functions file. However, if you are applying this fix it is recommended that you use FTP to access and modify that file. Be sure the code you copy and paste looks exactly the way it does in the link above. Sometimes quote marks in code can change slightly when copying it within certain editors. Also it is advisable that you make a backup a copy of that file before you replace it with the newly modified version.

I am still not sure if this fix is one that would be advised by WordPress core developers or support staff but would love if someone could weigh in on that. All I know is that after searching high and low I finally found a solution that works.