Is fishing in Sulani broken again?

Try moving the whole mods folder to another place, delete the localthumbcache.package and then test to see if the issue remains without mods/cc there.
It is best to test and see if mods/cc may be causing the issue.

It is NOT a mod. I have tried this and moved my mods folder and deleted the localthumbcache.package and fishing does not work. She just waves her hand like it is a routing error or something, but she cannot fish. 

So, is anyone else experiencing this?

Julianna was able to fish in the Mua Pel'am neighborhood.

Would repairing the game fix something like this? I mean, if simgirl1010 can fish, then it can't be a new bug, can it? So something must be glitched with my game. Or could it be my save? I guess I need to take everything out and try having the game reset itself after I repair it? Any suggestions?

Repairing the game may help. Also, try resetting your sims 4 folder, and testing in a new save game without putting back any of your data in the sims 4 folder and see if the issue remains.
https://sims4.crinrict.com/eng/2014/09/resetting-the-game-to-factory-settings-without-reinstalling/

Thank you for the suggestions. I will try them and get back to this thread with the results.

I reset my game by moving my folder and letting the game create a new one. I thought I would check it out before trying to repair it, so I grabbed a sim off the gallery and moved him to Sulani. And as you can see by the photo, he CAN fish.

So, does this mean my original save is corrupt? I guess the only way to know is to put it into my new game and see for myself. Or will that break that save? Hmmm...I guess I am going to copy it into my game and give it a try and see if my original sim can fish. Be back later...

As you can see, as soon as I got my original save put into the new folder, she still could not fish. So my next option was to repair the game. This did not work either. SO mods or no mods, this save will not let my sim fish. UGH...This is the third time I have tried play a sim living in Sulani, making their living off of the fish and what they can grow on the island. Of course, the first time I tried was before the fishing glitch everyone was having occurred. My Jason Mamoa was living fine until it occurred.  I tried to recreate him later while the glitch was still happening to no success. This sim is in a completely different save that I started after it was fixed. She has gone thru Uni and I got wild idea to just move her after a vacation, to Sulani full time. I had her fishing off the boat for awhile as I also had this sim making money off of odd jobs, so she would work scuba diving then fish after she located the object required to complete the job. So it just didn't occur to me to have her fish anywhere else. Until she had made enough money to support herself off of fishing and foraging or growing food. It was only in the last rotation did I notice this happening, but I completely forgot about it until the next time to play her house.

I will admit, this totally bums me out. I finally began a long term save to play and have tried to be careful about the things I have read that can ruin your save and your gameplay. I use Plumbuddy and Sims Mod Manager, when I install a mod, I use CurseForge and creators Paetron pages to stay on top of all mods, and when the updates happen, I do everything I possibly can to make sure my game is at 100%. What can one do to prevent a save from becoming corrupted? I have even tried to be careful and not add rentals to my game, knowing this can corrupt it. I DO download lots and sims from the gallery, and I have been hearing grumbles about people downloading corrupt lots and sims. Could this be my problem?

So I guess fishing is NOT broken, but my save is. In case anyone is reading this thinking the this could be a problem with their game.

Thanks for your help, Rosemow and Simgirl1010!

I actually just experienced something similar to this in Sulani with my sim who was there for a vacation. At first she could fish from the pier that does fishing competitions but then after she reached fishing level 3 or 4 she no longer fished there when I told her to. Instead she just swam to the nearest boat and fished from there. I don't use any mods. 

Yes, this happened as well couple times. I just thought it was because another sim had engaged with the boat that she wanted to go fish from. When there was nobody else around it didn't happen. She could just easily go and fish from the boat but it annoys me that she won't fish from the designated fishing place since there's better fish there.