Spanish [SOLUCIONADO ]Error al ejecutar jRDC.jar - Error-fetching-connection

En mi PC funciona perfectamente, esto ocurre en la PC de la oficina donde la quiero instalar.
Hay que copiar y ejecutar algo mas que el jrdc.jar ?
Gracias de antemano!
#DATABASE CONFIGURATION (properties file)
DriverClass=com.mysql.jdbc.Driver
JdbcUrl=jdbc:mysql://localhost:3306/nexxges?characterEncoding=utf8&useSSL=false
User=gestion
Password=gestionpass
#Java server port
ServerPort=2930
C:\JAVA\bin>java -jar jrdc.jar
2021-09-14 20:09:59.400:INFO::main: Logging initialized @374ms to org.eclipse.je
tty.util.log.StdErrLog
sep. 14, 2021 8:09:59 P. M. com.mchange.v2.log.MLog
INFO: MLog clients using java 1.4+ standard logging.
sep. 14, 2021 8:10:00 P. M. com.mchange.v2.c3p0.C3P0Registry
INFO: Initializing c3p0-0.9.5.2 [built 08-December-2015 22:06:04 -0800; debug? t
rue; trace: 10]
2021-09-14 20:10:00.577:INFO ejs.Server:main: jetty-9.4.z-SNAPSHOT; built: 2018
-05-03T15:56:21.710Z; git: daa59876e6f384329b122929e70a80934569428c; jvm 11.0.1+
2021-09-14 20:10:00.660:INFO ejs.session:main: DefaultSessionIdManager workerNa
me=node0
2021-09-14 20:10:00.662:INFO ejs.session:main: No SessionScavenger set, using d
efaults
2021-09-14 20:10:00.666:INFO ejs.session:main: node0 Scavenging every 600000ms
2021-09-14 20:10:00.680:INFO ejsh.ContextHandler:main: Started o.e.j.s.ServletC
ontextHandler@36804139{/,file:///C:/JAVA/bin/www,AVAILABLE}
2021-09-14 20:10:00.693:INFO ejs.AbstractNCSARequestLog:main: Opened C:\JAVA\bi
n\logs\b4j-2021_09_14.request.log
2021-09-14 20:10:00.729:INFO ejs.AbstractConnector:main: Started ServerConnecto
r@6531a794{HTTP/1.1,[http/1.1]}{0.0.0.0:2930}
2021-09-14 20:10:00.734:INFO ejs.Server:main: Started @1720ms
jRDC is running (version = 2.22)
sep. 14, 2021 8:10:16 P. M. com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSourc
INFO: Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acqu
ireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCo
mmitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> fa
lse, checkoutTimeout -> 20000, connectionCustomizerClassName -> null, connection
TesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, contextClas
sLoaderSource -> caller, dataSourceName -> 1hge15yaj1rz54epcr0i9t|778d1062, debu
gUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> c
om.mysql.jdbc.Driver, extensions -> {}, factoryClassLocation -> null, forceIgnor
eUnresolvedTransactions -> false, forceSynchronousCheckins -> false, forceUseNam
edDriverClass -> false, identityToken -> 1hge15yaj1rz54epcr0i9t|778d1062, idleCo
nnectionTestPeriod -> 600, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://localho
st:3306/nexxges?characterEncoding=utf8&useSSL=false, maxAdministrativeTaskTime -
> 0, maxConnectionAge -> 0, maxIdleTime -> 1800, maxIdleTimeExcessConnections ->
0, maxPoolSize -> 15, maxStatements -> 150, maxStatementsPerConnection -> 0, mi
nPoolSize -> 3, numHelperThreads -> 3, preferredTestQuery -> null, privilegeSpaw
nedThreads -> false, properties -> {password=******, user=******}, propertyCycle
-> 0, statementCacheNumDeferredCloseThreads -> 0, testConnectionOnCheckin -> fa
lse, testConnectionOnCheckout -> true, unreturnedConnectionTimeout -> 0, userOve
rrides -> {}, usesTraditionalReflectiveProxies -> false ]
sep. 14, 2021 8:10:47 P. M. com.mchange.v2.resourcepool.BasicResourcePool
WARNING: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@1482
d6e0 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to
acquire a needed new resource, we failed to succeed more than the maximum numbe
r of allowed acquisition attempts (30). Last acquisition attempt exception:
java.sql.SQLException: Unknown system variable 'language'
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:964)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2483)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2441)
at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1381)
at com.mysql.jdbc.ConnectionImpl.loadServerVariables(ConnectionImpl.java
:3790)
at com.mysql.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImp
l.java:3227)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2017)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:779)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at jdk.internal.reflect.GeneratedConstructorAccessor6.newInstance(Unknow
n Source)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newI
nstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:330)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManag
erDataSource.java:175)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:220)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:206)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionRe
sourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResource
Pool.java:1138)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPe
ndingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125)
at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourc
ePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.ru
n(BasicResourcePool.java:1870)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(Thre
adPoolAsynchronousRunner.java:696)
sep. 14, 2021 8:10:47 P. M. com.mchange.v2.resourcepool.BasicResourcePool
WARNING: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicR
esourcePool@213e643b is interrupting all Threads waiting on a resource to check
out. Will try again in response to new client requests.
sep. 14, 2021 8:10:47 P. M. com.mchange.v2.resourcepool.BasicResourcePool
WARNING: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@510e
f391 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to
acquire a needed new resource, we failed to succeed more than the maximum numbe
r of allowed acquisition attempts (30). Last acquisition attempt exception:
java.sql.SQLException: Unknown system variable 'language'
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:964)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2483)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2441)
at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1381)
at com.mysql.jdbc.ConnectionImpl.loadServerVariables(ConnectionImpl.java
:3790)
at com.mysql.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImp
l.java:3227)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2017)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:779)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at jdk.internal.reflect.GeneratedConstructorAccessor6.newInstance(Unknow
n Source)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newI
nstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:330)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManag
erDataSource.java:175)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:220)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:206)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionRe
sourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResource
Pool.java:1138)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPe
ndingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125)
at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourc
ePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.ru
n(BasicResourcePool.java:1870)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(Thre
adPoolAsynchronousRunner.java:696)
sep. 14, 2021 8:10:47 P. M. com.mchange.v2.resourcepool.BasicResourcePool
WARNING: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicR
esourcePool@213e643b is interrupting all Threads waiting on a resource to check
out. Will try again in response to new client requests.
sep. 14, 2021 8:10:47 P. M. com.mchange.v2.resourcepool.BasicResourcePool
WARNING: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@f594
3f0 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to
acquire a needed new resource, we failed to succeed more than the maximum number
of allowed acquisition attempts (30). Last acquisition attempt exception:
java.sql.SQLException: Unknown system variable 'language'
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:964)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2483)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2441)
at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1381)
at com.mysql.jdbc.ConnectionImpl.loadServerVariables(ConnectionImpl.java
:3790)
at com.mysql.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImp
l.java:3227)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2017)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:779)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at jdk.internal.reflect.GeneratedConstructorAccessor6.newInstance(Unknow
n Source)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newI
nstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:330)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManag
erDataSource.java:175)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:220)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnecti
on(WrapperConnectionPoolDataSource.java:206)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionRe
sourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResource
Pool.java:1138)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPe
ndingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125)
at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourc
ePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.ru
n(BasicResourcePool.java:1870)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(Thre
adPoolAsynchronousRunner.java:696)
sep. 14, 2021 8:10:47 P. M. com.mchange.v2.resourcepool.BasicResourcePool
WARNING: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicR
esourcePool@213e643b is interrupting all Threads waiting on a resource to check
out. Will try again in response to new client requests.

Ahí comprobé las versiones y si, yo tengo en mi maquina la 8 y en la oficina esta instalada la 5.1.30.
Antes de actualizar el Mysql voy a intentar hacerlo andar en esta versión, asique me bajo el conector para esa versión desde el enlace que me diste y lo instalo en la oficina?
Gracias