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请问在附表中有个字段选择图片上传,录入和单独查询这个表没问题,但和主表一起展示的时候就报下面的错,为什么呢?
Java backtrace for programmers:
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freemarker.core.NonStringException: Error on line 211, column 210 in online/template/ledefault/html/jformonetomany.ftl
Expecting a string, date or number here, Expression subTableData['${subTableField.field_name}']?if_exists is instead a freemarker.template.SimpleSequence
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