escaped as &

After checking on markup validation I have 83 errors with most of them being like the following below. Should I be worried about these?

…1 cl-warea-id-1 cl-warea-all-row fix’><section id=”wppa_lasten_widget-2″ clas…

Line 2, column 7065: & did not start a character reference. (& probably should have been escaped as &.)

…on.net/quotes-by-women-2/?wppa-album=0&wppa-cover=0&wppa-occur=1&wppa-tag=Abil…

Line 2, column 7078: & did not start a character reference. (& probably should have been escaped as &.)

…-by-women-2/?wppa-album=0&wppa-cover=0&wppa-occur=1&wppa-tag=Ability” title=”1…

Line 2, column 7091: & did not start a character reference. (& probably should have been escaped as &.)

…wppa-album=0&wppa-cover=0&wppa-occur=1&wppa-tag=Ability” title=”1 photos – 3%”…

Line 2, column 7235: & did not start a character reference. (& probably should have been escaped as &.)

…on.net/quotes-by-women-2/?wppa-album=0&wppa-cover=0&wppa-occur=1&wppa-tag=Acce…

Line 2, column 7248: & did not start a character reference. (& probably should have been escaped as &.)

…-by-women-2/?wppa-album=0&wppa-cover=0&wppa-occur=1&wppa-tag=Acceptance” title…

Line 2, column 7261: & did not start a character reference. (& probably should have been escaped as &.)

…wppa-album=0&wppa-cover=0&wppa-occur=1&wppa-tag=Acceptance” title=”5 photos – …

Line 2, column 7412: & did not start a character reference. (& probably should have been escaped as &.)

…on.net/quotes-by-women-2/?wppa-album=0&wppa-cover=0&wppa-occur=1&wppa-tag=Agin…

https://www.ads-software.com/plugins/wp-photo-album-plus/