X_STORAGE_UNWRITABLE
Means
the storage disk this process needs cannot be written to
Typical cause
a hardened container (readOnlyRootFilesystem: true) with no writable volume at the embedded disk's root, or S3_ENDPOINT set with S3_BUCKET empty
Fix
mount a writable volume at the path in the message, or set S3_ENDPOINT + S3_BUCKET to use object storage. x doctor --json shows which binding this process resolved