That seems like a revolt.
You need to keep your influence on a planet at 4 or above.

Look like you need to build the positive influence building with the heart which gives you +2 influence. Once it like six, you can sell it unless you have the tax income building which has -2 negative influence. Your government building only gives you +1, so eventually the planet will revolt. There are plenty of special buildings on many planets that give you +1, paired with your government building will negate the tax building penalty, with a bonus discount for various units.

The other thing I can think of is did you get a quest to build 2 labor camps and forgot to sell them afterwards? Labor camps also have -2 influence.

引用自 Cooler12351：

That seems like a revolt.
You need to keep your influence on a planet at 4 or above.

ooooooooh. I forgot revolt was a feature. I should of seen this coming when I built two tax buildings there lol. I completely forgot about that mechanic XD XD. I wanted to control Onderon with an iron fist (dont ask me why) so I made it into a slave planet, making a labor camp and two tax buildings.

引用自 Azihar：

Look like you need to build the positive influence building with the heart which gives you +2 influence. Once it like six, you can sell it unless you have the tax income building which has -2 negative influence. Your government building only gives you +1, so eventually the planet will revolt. There are plenty of special buildings on many planets that give you +1, paired with your government building will negate the tax building penalty, with a bonus discount for various units.

The other thing I can think of is did you get a quest to build 2 labor camps and forgot to sell them afterwards? Labor camps also have -2 influence.

I forgot that revolting was a thing. I wanted to rule Onderon with an iron fist (dont ask why) so I made a labor camp and two tax buildings then turret and shield defences to protect it. I was so focused on ruling over this one planet I forgot the people can revolt against me.