osgearth制作缓存时，读取shapefile错误求解

beyourself2015

beyourself2015

ERROR 1: SQL Expression Parsing Error: syntax error, unexpected end of string, e
xpecting '.'. Occured around :
SELECT * FROM 'world'
                     ^
ERROR 1: SQL Expression Parsing Error: syntax error, unexpected end of string, e
xpecting '.'. Occured around :
SELECT * FROM 'world'
                     ^
[osgEarth]  Seeding layerchina_boundaries
ERROR 1: SQL Expression Parsing Error: syntax error, unexpected end of string, e
xpecting '.'. Occured around :
SELECT * FROM 'china'
                     ^
ERROR 1: SQL Expression Parsing Error: syntax error, unexpected end of string, e
xpecting '.'. Occured around :
SELECT * FROM 'china'