Depending on the kind of problem, this kind of log comes in two versions:
- a short version, in which the log line terminates with the exception message;
- a long version in which the full exception stack trace is reported.
Since the short version includes a colon before the exception message, this case seems a long version.
In this case, the exception message is reported at the beginning of the stack trace.
Could you check if the stack trace is included in the log file?