Launching the updated version of IdeaMaker 3.5.2 on Ubuntu 18.04.4 LTS from executable file  ideaMaker-3.5.2.4098.glibc2.15-x86_64.AppImage generate error:

ideamaker.real: error while loading shared libraries: librtmp.so.0: cannot open shared object file: No such file or directory

Solution was really simple. Check the library location in your OS:

$ locate librtmp.so.1
/usr/lib/x86_64-linux-gnu/librtmp.so.1

If the library exists - create link from version 1 to version 0:

$ sudo ln -s /usr/lib/x86_64-linux-gnu/librtmp.so.1 /usr/lib/x86_64-linux-gnu/librtmp.so.0
linux
error
shell