Just wanted to let you know that we are aware of this issue and will work on fixing it. Unfortunately, we cannot give you an estimate of when it will be resolved.
You can find here the thread where the issue was reported: https://community.bitnami.com/t/forum-error-500-using-ficus3/49779
If you already applied the change, we recommend you to restore from the backup you created and wait until we resolve the issue on our side. If you did not create any backup, you would need to look into the log files, which may give you a tip on what is happening: