How to view the files that give errors?

I am using rclone 1.51.0 on Windows 7 x64. I setup encrypted remote for box cloud service and uploaded my data but in the end i get this:

2020/03/20 23:44:59 INFO  : Encrypted drive 'box-crypt:': Waiting for transfers to finish
2020/03/20 23:44:59 ERROR : Encrypted drive 'box-crypt:': not deleting files as there were IO errors
2020/03/20 23:44:59 ERROR : Encrypted drive 'box-crypt:': not deleting directories as there were IO errors
2020/03/20 23:44:59 ERROR : Attempt 3/3 failed with 5 errors and: Error "item_name_too_long" (400): Item name too long
2020/03/20 23:44:59 Failed to sync with 5 errors: last error was: Error "item_name_too_long" (400): Item name too long

How to view which files are causing this error and is this error server related? I run this command: rclone sync e: box-crypt: --filter-from filter-file.txt

You'd need to store a log file and use -vv and --log-file rclone.log or something along those lines.

You can't have files longer than 143 characters due to limits in how long a file name can be.

Is this 142 characters limit rclone limitation or box cloud limitation?

Box's limitations are here:

https://rclone.org/box/#limitations

If you add crypt on top of that, it reduces the file name length even more.

I searched the log file and found the files with long names. Why the encryption reduces file names length more?

there are different modes for encrypting filenames.
have you read this?
https://rclone.org/crypt/#file-name-encryption-modes

Obfuscation - file names can be longer than standard encryption

I prefer to use standard file name encryption, so, i guess i have to deal with file names length limitation.