shikuz
22
Thanks @ncatanchin for the additional information.
Just making sure that I understood: Were you able to create time-slip notes and add entries to them via the panel?
Is the empty message from your main / first installation of Joplin and the plugin?
This message indeed means that Time Slip is unable to find notes tagged with time-slip. Could you check what Joplin reports as the number of notes tagged with the tag? (for example, I have 3 logs.)

I'm not an expert on Joplin's plugin system, but it does look strange. I don't see this in my logs. Perhaps this can explain the "View already added" error.
Having this PostMessageService error right after the plugin starts is normal, I believe, if the panel's JS script has yet to load while the message was sent. This happens on my device as well after Joplin starts (just once in every app session).
EDIT: Please try the latest v0.3.1. I tried to handle one edge case that could explain the behaviour you're experiencing.