BTW, while I was locating Joplin log/error messages per your indication, I also ran by the folder of Joplin program, and I noticed something unusual, the folder of Joplin app is empty, but I can and am still running Joplin app right now as I am typing this post, I am not sure what this could mean.
Naturally, I cannot help but thought about the removal of multiple installation incident took place days ago, but I am not sure about the relation between here and there, below is the reference screenshot:
