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file name appearing as question marks when downloading all attachments

Non-ASCII characters appearing as question marks only when downloading all attachments.

those characters appear correctly in the page and when downloading separately.


2022-09-01 203547.png


Following the troubleshooting article,  i tried to run  the encoding test and checked database collation and character set.

here is the result.


encoding test


>> File was written successfully

Detect whether the file system is mangling the file name when it is saved
>> the file name has been mangled



database collation and character set

all are  utf8mb4_bin





the troubleshooting article:


Many thanks if could provide any help

1 answer

1 accepted

0 votes
Answer accepted

it works.



After adding the following to my file, all encoding tests pass:

export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8
export LANGUAGE=en_US.UTF-8

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