I’m not sure if this helps anyone but this is what I did. So yes, I made a guardian farm and it no longer worked, but since I didn’t want to effect or change my world, I left all the files alone and did not use regenerating programs etc. Instead I went to find another ocean monument but in the new 20w22a snapshot. The ocean monument I found was not in a place I have searched before and therefore the chunks I loaded were new for the snapshot. So, there were guardians spawning at this ocean monument. It will take a while to rebuild a farm, but I’m glad I was able to see guardians spawning at a monument. Again, I’m not sure if this helps anyone, but I just wanted to say this for those who might want to know!
I’m not sure if this helps anyone but this is what I did. So yes, I made a guardian farm and it no longer worked, but since I didn’t want to effect or change my world, I left all the files alone and did not use regenerating programs etc. Instead I went to find another ocean monument but in the new 20w22a snapshot. The ocean monument I found was not in a place I have searched before and therefore the chunks I loaded were new for the snapshot. So, there were guardians spawning at this ocean monument. It will take a while to rebuild a farm, but I’m glad I was able to see guardians spawning at a monument. Again, I’m not sure if this helps anyone, but I just wanted to say this for those who might want to know!