I have kind of the same issue, when I launch my app that uses the expo camera and barcode scanner, it instantly crashes on ios.
When I look at the ios testflight logs, I get:
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000020
Exception Codes: 0x0000000000000001, 0x0000000000000020
VM Region Info: 0x20 is not in any region. Bytes before following region: 4369612768
REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL
UNUSED SPACE AT START
--->
__TEXT 104730000-104734000 [ 16K] r-x/r-x SM=COW /var/containers/Bundle/Application/869C46D1-8619-4AD3-AEEC-0AAB5C0AAE66/VeganVerify.app/VeganVerify
Termination Reason: SIGNAL 11 Segmentation fault: 11
Terminating Process: exc handler [90193]
Triggered by Thread: 5