"Invalid weights provided" error keeps appearing

Whenever I open the Anki app (the computer version) on a Mac computer, the error “Invalid weights provided” keeps appearing on the screen. When I try to close it, it appears once again. I have tried all the suggested methods to solve the issue in the Troubleshooting manual on the Anki website. Sometimes, the error stopped appearing for a few minutes or hours. However, after some time, it began to appear once again. I am using the OpenGL video driver, which is advised for Mac software. I have tried restarting both the Anki and the computer as well as tried using the safe mode Anki opening method to see whether the add-ons are causing the issue. However, the problem keeps appearing. Before the error “Invalid weights provided” began to appear, I used to receive a similar message “Invalid params provided”. The same errors keep appearing on my phone AnkiMobile app, which is synchronised with the Anki computer app. I will be very grateful for any advice regarding this issue. Thank you in advance.

Open the Deck Options page, scroll down to the FSRS section and click Optimize all presets.

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You might need to find the specific Options preset that’s having the problem, and blank out the FSRS parameters first, to guarantee you’ll get new when you re-optimize.

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