Heard about similar issue some time ago, turned out to be network inssue. Try to kill the wallet, turn off internet connectivity and start it again offline.
If wallet starts ok, go to Settings, backup seed phrase, factory reset and recover your balance using seed phrase recovery.
Btw had a similar issue when trying a second transaction by NWC nostr:nprofile1qqs8xgquvj09ymv7a09fzd574rsp0sdlm75k87pwg3qsa4n0dhz20mgpzpmhxue69uhkummnw3ezumrpdejqzynhwden5te0wphkcmn0wd68ytnc09aqz8rhwden5te0d36kucmgvfhhstnnv9hxgamfvd5zuenpwfksxpj4x4 with my jurjen@minibits.cash. will try to restore it with this instruction
