By Caroline Pailliez and Tassilo Hummel PARIS (Reuters) -More than a fifth of France’s service stations were grappling with supply problems on Saturday, the energy ministry said, as strikes at refineries run by oil majors TotalEnergies and ExxonMobil continued to strain drivers’ nerves. “The Government is doing its utmost to restore the situation to normal as soon as possible”, Energy Minister Agnes Pannier-Runacher said in a statement. The ministry said 20.7% of service stations were experiencing difficulties with at least one product at 1 p.m. (1100 GMT) on Saturday, compared with 19% the da…