Can you open any other projects? For example, a fresh template.
If not, your problem seems strangely similar to an issue I had a while ago, except it was just an outright crash at that percent. No seemingly logical reason. What ultimately worked for me was cloning my project and replacing the old one. After verifying all my 檔iles and making sure 每verything was working fine, I removed the old, broken project with the cloned version. Following that, everything worked fine. Seems like it was just something wonky on the engine’s side.
Worst case, this is an easy check you can do since you can just try opening the cloned project without any other hassle or time investment.