Probem with Alternate page with proper canonical tag

 Hi, today I received, from the Google Search Console, about an "Alternate page with the proper canonical tag".
Is it something related to Route66?
Here are some examples, by Google Search console, pages were problems occured
URL Last crawled
https://www.konveks.hr/blog/umjetna-trava-i-ljetne-vrucine/amp
Oct 28, 2022
https://www.konveks.hr/blog/kucni-ljubimci-i-umjetna-trava/amp
Oct 20, 2022
https://www.konveks.hr/blog/moderne-podne-obloge-oko-bazena/amp
Oct 20, 2022
https://www.konveks.hr/blog/zelite-privuci-pozornost-lijepom-terasom/amp
Oct 20, 2022
https://www.konveks.hr/blog/imam-kucne-ljubimce-mogu-li-jos-uvijek-imati-umjetnu-travu/amp
Oct 20, 2022
https://www.konveks.hr/blog/blog/8-mitova-o-umjetnoj-travi/amp
Oct 20, 2022
https://www.konveks.hr/blog/blog/8-mitova-o-umjetnoj-travi
URL Last crawled
https://www.konveks.hr/portfolio-konveks/kuca-za-odmor-dobrinj-krk-djecje-igraliste?i=kuca-za-odmor--dobrinj--krk--djecje-igraliste--4-
Oct 19, 2022
https://www.konveks.hr/portfolio-konveks/vila-ruza-kolocep-okucnica?i=vila-ruza--kolocep--okucnica--2-
Oct 19, 2022
https://www.konveks.hr/portfolio-konveks/obiteljska-kuca-polje-krk-okucnica?i=Obiteljska-kuca--Polje--Krk--okucnica--1-
Oct 19, 2022
https://www.konveks.hr/portfolio-konveks/obiteljska-kuca-cresnjevac-2-okucnica?i=Obiteljska-kuca--Cresnjevac-2--okucnica--4-
Oct 19, 2022
https://www.konveks.hr/portfolio-konveks/bi-village-fazana-suncaliste-bazen-1?i=bi-village--fazana--suncaliste-bazen-1--2-
Oct 19, 2022
https://www.konveks.hr/portfolio-konveks/dvoriste-obiteljske-kuce-u-rijeci-uredno-umjetnom-travom?i=Dvoriste-obiteljske-kuce-u-rijeci-uredno-umjetnom-travom--4-