Utf-8 error occurred when flutter started debugging, ask for solutions

Project startup and debugging reported this error:

Launching libmain.dart on Android SDK built for x86 in debug mode.
FormatException: Bad UTF-8 encoding 0xc2 (at offset 116)
Exited (sigterm)

there is no more detailed information, do you have a solution?

Apr.05,2021

this is the reason why some characters in your source file cannot be recognized as UTF8, but your file encoding is UTF8

Command line tapping

cd android

windows:

gradlew.bat assDebug --stacktrace

Class unix:

./gradlew assDebug --stacktrace

then according to the log, you can see which file has a problem
this is the location of the prompt offset 116

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e5ad84-44938.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5ad84-44938.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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