I write these in problem.xml
<?xml version="1.0" encoding="utf-8" standalone="no"?>
<problem>
<names>
<name language="english" main="true" value="LytchenLovesJSON"/>
</names>
<judging cpu-name="Intel(R) Core(TM) i3-8100 CPU @ 3.60GHz" cpu-speed="3600" input-file="" output-file="">
<testset name="tests">
<time-limit>1000</time-limit>
<memory-limit>134217728</memory-limit>
<test-count>12</test-count>
<input-path-pattern>tests/%02d.in</input-path-pattern>
<answer-path-pattern>tests/%02d.ans</answer-path-pattern>
<tests>
<test method="manual"/>
</tests>
</testset>
</judging>
<files>
<resources>
<file path="files/testlib.h" type="h.g++"/>
</resources>
</files>
<assets>
<checker type="testlib">
<source path="files/check.cpp" type="cpp.g++"/>
<copy path="check.cpp" type="cpp.g++"/>
</checker>
</assets>
<properties>
<property name="tests-wellformed" value="false"/>
</properties>
</problem>
and in the folder tests
there are 01.in, 01.ans, ..., 12.in, 12.ans
however, when I try to update contest, it says User {name='xzm2019'}: XML-descriptor of the problem 'C' has illegal format: The specified test count in testset 'tests' is 12, but actual number of tests is 1.
who can help me, what's wrong in these tests. thank you.