Relators, Randy Gray and PPC Transportation Company, filed this original proceeding to challenge Respondent's order compelling discovery responses to Requests for Production 89 and 96 and Interrogatories 3 and 15.1 Shad Wells is the Real Party in Interest. On May 15, 2019, Relators filed a Rule 11 agreement with this Court, which reflects that the parties resolved the discovery issues *213raised in this proceeding. On May 22, Wells filed a response, which indicates that the parties resolved their dispute and Respondent signed an order effectuating their agreement. Respondent's order demonstrates that Relator's complaints regarding Requests for Production 89 and 96 and Interrogatories 3 and 15 have been resolved. On May 24, Relators filed a motion to dismiss this proceeding as moot.
If a controversy no longer exists between the parties, the case becomes moot. Reule v. RLZ Inv. , 411 S.W.3d 31, 32 (Tex. App.-Houston [14th Dist.] 2013, no pet.). When a judgment "cannot have a practical effect on an existing controversy, the case is moot and any opinion issued on the merits in the appeal would constitute an impermissible advisory opinion." Id. An opinion is advisory when it neither constitutes specific relief to a litigant nor affects legal relations. See Houston Chronicle Publ'g Co. v. Thomas , 196 S.W.3d 396, 401 (Tex. App.-Houston [1st Dist.] 2006, no pet.). Accordingly, because the parties resolved the dispute presented in this original proceeding, we grant Relators' motion to dismiss and dismiss the petition for writ of mandamus as moot . See In re Hite , No. 12-18-00121-CV, 2018 WL 2715300, at *2 (Tex. App.-Tyler June 6, 2018, orig. proceeding) (mem. op.); see also TEX. R. APP. P. 42.1(a).