Are the versions you use available?
Not that I know.
You have a mod / modversion that is not on curseforge
I have made a modopack and I was trying out the download and I got the errormessage "Mod installation failed. Mod is not supported by the application". Does someone know why this happens? This is my modpack: https://www.curseforge.com/minecraft/modpacks/survival-optimized.