请问各位大神，为什么我加了ila之后无法生成bitstream？注释掉后能正常生成

江东小霸王

请问各位大神，为什么我加了ila之后无法生成bitstream？注释掉后能正常生成 ，报错如下：

[DRC 2320] Rule violation (PDIL1) Invalid Site Configuration - Invalid configuration for site ILOGIC_X0Y76. Reason: Site pin to site pin routethru requires conflicting attribute enum values for user logic element 'ISERDESE2 in site 'ILOGIC_X0Y76'. Attribute 'IOBDELAY' is programmed to 'BOTH' but needs a value of 'NONE' for the route-thru.