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Happened to me as well a couple weeks ago but I got lucky and caught it within a day. I halfway recall my AC installer recommending I put in a bleach tablet once every couple months into the condensation catch tray to help avoid pipe blockage. Have yet to use them myself but I'd imagine they exist for a reason https://www.amazon.com/AC-Safe-Pan-Tablets-Humidifiers/dp/B007I7KYGS
Keeping something like this in the tank helps.
AC Safe Tablets-30 Count: Cleans scum in Drain Pans and Humidifiers, Blue https://www.amazon.com/dp/B007I7KYGS/ref=cm_sw_r_apan_glt_i_KWWCZ5YDWP6E42R61Q0C?_encoding=UTF8&psc=1
The pan tablets are more effective than vinegar: