Error message

• Notice: Undefined index: und in eval() (line 22 of modules/php/php.module(80) : eval()'d code).
• Notice: Trying to access array offset on value of type null in eval() (line 22 of modules/php/php.module(80) : eval()'d code).
• Notice: Trying to access array offset on value of type null in eval() (line 22 of modules/php/php.module(80) : eval()'d code).