https://bugs.kde.org/show_bug.cgi?id=472851
--- Comment #10 from Volker Krause <vkra...@kde.org> --- Ok, that is likely the cause of this problem then. And this is not limited to the indoor map, but would affect any API use on a server using Let's Encrypt certificates. There are three possible options I can think of: (1) You manually install the ISRG X1 certificate from https://letsencrypt.org/certificates/, assuming that is possible on Android at all. (2) We bundle an updated CA certificate set with all our network-using apps (which is presumably what your browser does). That isn't hard technically, but it's substantial compliance work to ensure we don't make things worse by shipping a not trustworthy certificate. (3) We add an option to ignore the error. That opens the door for accidentally compromising security even for people with correct CA certificates though. -- You are receiving this mail because: You are watching all bug changes.