- throw new UnexpectedErrorException("Failed to send message: " + e.getMessage() + " (" + e.getClass()
- .getSimpleName() + ")", e);
+ if (e instanceof IOException io && io.getMessage().contains("No prekeys available")) {
+ throw new UnexpectedErrorException("Failed to send message: " + e.getMessage() + " (" + e.getClass()
+ .getSimpleName() + "), maybe one of the devices of the recipient wasn't online for a while.",
+ e);
+ } else {
+ throw new UnexpectedErrorException("Failed to send message: " + e.getMessage() + " (" + e.getClass()
+ .getSimpleName() + ")", e);
+ }