Script

${PODS_ROOT}/FirebaseCrashlytics/upload-symbols -gsp <Path-to-plist> -p ios "${DWARF_DSYM_FOLDER_PATH}"

Input Files

${DWARF_DSYM_FOLDER_PATH}/${DWARF_DSYM_FILE_NAME}/Contents/Resource/DWARF/${TARGET_NAME}
$(SRCROOT)/$(BUILT_PRODUCTS_DIR)/$(INFOPLIST_PATH)

Firebase Crashlyticsを手動インストールして試してみた - Qiita

Could not complete submission of dSYM at YOUR_APP.dSYM: Error Domain=com.crashlytics.mac.error-domain.process-dsym Code=2 "File no longer exists at (null)" UserInfo={NSLocalizedFailureReason=File no longer exists at (null)}

Simplify the Process of Uploading iOS dSYM Files to Crashlytics with Fastlane