Nicola Sturgeon must resign if she is found to have misled the Scottish Parliament, a senior MSP has said.The First Minister has faced questions after she initially told Holyrood she first heard of complaints of sexual misconduct against Alex Salmond at a meeting with him in her home on April 2, 2018.It was later revealed the SNP leader had been made aware of the allegations in an informal meeting with his former chief of staff Geoff Aberdein on March 29 of that year – four days earlier.Lib Dem