Golang cannot connect to PostgreSQL

Development environment: vagrant,
vagrant installed on
windows10 runs centos7,
centos7 installs Golang and PostgreSQL, compiles and runs go code.

problem:
cannot connect to PostgreSQL using gorm. Gorm document is written as follows:

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:


:


20panic("failed to connect database")

windowsnavicatPostgreSQL:

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what is the reason for compiling errors?

Jan.19,2022

can you output the err? how do you know what the error is directly panic?

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3f365-2c48b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3f365-2c48b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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