I’m comparatively new to BTC however i’m all in on the ideas behind it. I do know nothing about coding or cryptography, however I like the idea of decentralization and I’m an enormous Austrian Econ nerd.
I had about 0.045 BTC in Coinbase Pockets, and transferred about 1/3 of it to my Bitcoin Core node on my macbook for the sake of getting it out of a centralized change. I’ve been working the Bitcoin Core software program for a few yr and a half now, however by no means used it as a pockets till every week in the past.
On 9/22/24, at 1500EST, the Core app stopped synchronizing with the community. I did some analysis as to why however didn’t make any modifications. This morning, 9/24/24, I made a decision the perfect factor to do could be to extend the RAM allotment for the Bitcoin Core app within the preferences. A number of individuals on numerous boards mentioned this helped them when the Core app stalled in synching with the blockchain.
A dialogue field popped up and mentioned I wanted to restart the app for the change to provoke. I did so, after which all the pieces went to hell.
As quickly as I reopened the Bitcoin Core app, the next dialogue field popped up 
[You need to rebuild the database using – reindex to go back to unpruned mode. This will redownload the entire blockchain.
Do you want to rebuild the block database now?]
After I chosen {OK}, this dialogue popped up subsequent. 
[Error: Error opening block database].
After I choose {OK} on the second dialogue field, the app crashes.
As I mentioned, I’m comparatively new to Bitcoin, and I’ve gone down the ideas rabbit gap for most likely over a thousand hours, learn Bitcoin Commonplace, Layered Cash, Dom Frisby’s Books, listened to each episode of Breedlove’s What Is Cash present, and so on. However I don’t actually have experience on the usage of the app, or of command prompts or coding in any way. I additionally, like an entire fkn fool, didn’t write down my non-public key, as I didn’t even know extract it from the Core app, and I hadn’t devoted that a lot time to figuring it out as a result of I actually didn’t assume I would wish it but. Lesson discovered.
Any knowledge concerning get the app to work once more, replace it, drive it to start out reindexing instantly on opening, discover my non-public key from the db recordsdata, and so on could be EXTREMELY welcome. Like I mentioned, I solely have about 0.016 BTC on this pockets, which isn’t a loopy quantity, however it’s not nothing (~$1000 as of 9/24/24) so yeah, please and thanks to anybody and everybody right here who would possibly be capable to throw me a rope.