`asb` hangs at "Opening Bitcoin wallet"
**Describe the bug**
My `asb` instance has been running for a while. Recently, without any apparent changes on my part, it has ceased being able to start. It simply hangs at "Opening Bitcoin wallet".

This also happens when I try to run `asb` with commands that access the wallet, such as showing the wallet descriptor or current balances.

The logs for `electrs` and `bitcoind` don't show anything unusual. The wallet files appear to have correct permissions.

**Lost/trapped Funds**
Yes, it looks like the Bitcoin in my `asb` wallet are inaccessible.

**Debug logs**
```
{"timestamp":"2022-06-27 20:54:51","level":"INFO","fields":{"message":"Initialized tracing","level":"debug"}}                                                
{"timestamp":"2022-06-27 20:54:51","level":"INFO","fields":{"message":"Reading config file","path":"/etc/asb/config.toml"}}                                  
{"timestamp":"2022-06-27 20:54:51","level":"DEBUG","fields":{"message":"Using existing sqlite database."}}                                                   
{"timestamp":"2022-06-27 20:54:51","level":"DEBUG","fields":{"message":"Reading in seed from /etc/asb/seed.pem"}}                                            
{"timestamp":"2022-06-27 20:54:51","level":"DEBUG","fields":{"message":"Opening Bitcoin wallet"}}   
```

**Platform (please complete the following information):**

- ASB
- `asb 0.10.2`
- Operating System: debian 11
