As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE WARNING MESSAGE AFTER TAKEOFF. NOSE GEAR DID NOT RETRACT. RAN QRH PROCEDURE. EXTENDED GEAR AND RETURNED TO FIELD. (FLT#3628) FO: 03/11/2019 CLOSED REMOVED AND REPLACED MLG PRIORITY VALVE P/N 4619-3 S/N 14748 IAW AMM. REMOVED AND REPLACED MLG SLECTOR VALVE P/N 750005000 S/N 0263T. PERFORMED GEAR EXTENSION/RETRACTION AND LEAK CHECK OF MLG PRIORITY VALVE AND MLG SELECTOR VALV IAW AMM. OPS CHECK GOOD NO LEAKS NOTED.