Here's the main error:
aldex.glm: doing glm test based on a model matrix
Fehler in lr2glm(mci_lr, conditions, ...) :
Please define the aldex.clr object for a model.matrix 'conditions'.
Ruft auf: aldex -> aldex.glm -> lr2glm
Looks like that's still in development: glm on Aldex2 - formula vs metadata columns
As far as I know, the best way to do this (as of now) is in R. See this example:
https://rdrr.io/github/ggloor/ALDEx_bioc/man/aldex.glm.html#heading-7